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###############################################################################
# Preliminary notes:                                                          #
# ------------------                                                          #
# Mark "-": change with an impact for users (and possibly developers).        #
# Mark "o": change with an impact for developers only.                        #
# Mark "+": change for Frama-C-commits audience (not in html version).        #
# Mark "*": bug fixed.                                                        #
# Mark "!": change that can break compatibility with existing development.    #
# '#nnn'   : BTS entry #nnn                                                   #
# '#!nnn'  : BTS private entry #nnn                                           #
# '#@nnn'  : Gitlab frama-c/frama-c issue                                     #
# For compatibility with old change log formats:                              #
# '#?nnn'  : OLD-BTS entry #nnn                                               #
###############################################################################

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##################################
Open Source Release <next-release>
##################################
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###################################
Open Source Release 22.0 (Titanium)
###################################

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-   MdR       [2020-10-19] Update Sarif output to 2.1.0 + prettier URI
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-   Dev       [2020-10-20] Support for OCamlGraph 2.0.0
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-   ACSL      [2020-10-16] Allows for axiomatic blocks-like extensions
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-   Variadic  [2020-10-14] Don't print generated function name but print
              original name and a comment with the generated name so that the
              printed code is compilable.
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-   Aorai     [2020-10-13] Ya automata can set auxiliary variables during a
              transition, and use such variables in subsequent guards.
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-   Kernel    [2020-10-09] Add option -print-config-json, to output Frama-C
              configuration data in JSON format.
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-   Logic     [2020-10-XX] '\from' now accepts '&v' expressions
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-   Metrics   [2020-10-01] Distinguish between undefined but specified functions
              and functions with neither definition nor specification.
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-*  Eva       [2020-09-28] Improved string builtins on wide strings: crash fixed,
              better performance, misaligned pointers now considered invalid.
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-   Kernel    [2020-09-22] New option -autocomplete p1, ..., pn that list the
              options of plug-ins p1, ..., pn in a format suitable for
              autocompletion scripts.
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-   Kernel    [2020-09-21] Option -permissive now allows non-existent option
              names.
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-   Logic     [2020-09-11] Introduce check-only annotations for
              requires, ensures, loop invariant and lemmas
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-   Kernel    [2020-09-08] Add option -print-cpp-commands, to print the
              preprocessing commands used by Frama-C.
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-   Eva       [2020-09-07] Deprecates legacy options aliases -val-* in favor
              of option names -eva-*.
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-*  Slicing   [2020-09-07] Better handling of invalid command line options.
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-   Eva       [2020-07-27] Improved automatic loop unroll (-eva-auto-loop-unroll
              option) on loops with several exit conditions, conditions using
              equality operators, temporary variables introduced by the Frama-C
              normalization or goto statements.
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-!  Kernel    [2020-07-21] OCaml version greater than or equal to 4.08.1 required.
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-   Eva       [2020-05-29] New builtins for trigonometric functions acos, asin
              and atan (and their single-precision version acosf, asinf, atanf).
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-   Kernel    [2020-05-28] Support for C11's _Thread_local storage specifier
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-   Kernel    [2020-05-26] New option -explain, which provides help messages
              for options used on the command line.
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-   Eva       [2020-05-25] New annotation eva_allocate to configure the behavior
              of an allocation builtin for a call, overriding the global option.
-   Eva       [2020-05-25] New option -eva-alloc-builtin to configure uniformly
              the behavior of allocation builtins, instead of providing several
              builtins with different behaviors for malloc/calloc/realloc.
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-   Eva       [2020-05-20] Supports the ACSL mathematical operator \abs
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-   Kernel    [2020-05-18] Support for C11's _Noreturn function specifier

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###################################
Open Source Release 21.1 (Scandium)
###################################

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###################################
Open Source Release 21.0 (Scandium)
###################################

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-*  Doc       [2020-05-07] Fixes internal refs in generated pdfs (fixes #2505)
-*  Kernel    [2020-05-04] Accept UCN-encoded unicode char in ACSL (fixes #@849)
o   Kernel    [2020-04-27] Plug-ins specific dirs now use Filepath instead of
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              mere strings.
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-   Eva       [2020-04-10] Fixes the Memexec cache on functions with logical
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              annotations about variables unused in the C body of the function.
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-   Eva       [2020-04-06] New option -eva-domains-function to enable domains
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              only on given functions. Argument <d:f> enables the domain [d]
              on function [f], while <d:f+> also enables it on all functions
              called from [f]. <d:f-> disables [d] from function [f].
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-   Eva       [2020-04-03] New experimental builtins for dynamic allocation
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              Frama_C_*alloc_imprecise: faster convergence, but very imprecise.
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-   Kernel    [2020-04-01] Report user errors when keys are not bound to a
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              value for command-line options that require pairs of key:value
              as arguments. Such keys were silently ignored.
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*!  Kernel    [2020-03-30] Reject labels at end of blocks.
-   RTE       [2020-03-30] Emits alarm on invalid pointers when option is on
-   Eva       [2020-03-30] Emits alarm on invalid pointers when option is on
-   Kernel    [2020-03-30] New option -warn-invalid-pointer (disabled by
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              default) to warn on invalid pointer arithmetics resulting in a
              pointer that does not point to an object or one past an object.
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-   RTE       [2020-03-27] Emits alarm on pointer downcast when option is on
-   Eva       [2020-03-27] Emits alarm on pointer downcast when option is on
-   Kernel    [2020-03-27] New option -warn-pointer-downcast (activated by
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              default), to warn when a conversion between pointer and integer
              might provoke a loss of precision.
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-   Kernel    [2020-03-20] Add option -cpp-extra-args-per-file
-*  Kernel    [2020-03-18] Fixes #@823 (-load-module/-load-script now accept
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              spaces in filename)
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-*  Kernel    [2020-03-18] Fixes #@818 (term generated for downcast alarms)
-   Eva       [2020-03-17] Supports the ACSL extended quantifiers \min and \max.
-   Eva       [2020-03-17] deprecate options -eva-*-domain in favor of
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              -eva-domains
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-   ACSL      [2020-03-04] Make conversion from C ptr to logic array explicit
-   Eva       [2020-03-03] Evaluates the logic predicate memchr_off, used in
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              Frama-C libc specifications.
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-   Eva       [2020-03-03] Slightly better heuristics for the subdivision of
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              evaluations (option -eva-subdivide-non-linear).
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-   Instantiate [2020-03-02] New plug-in Instantiate, to create function
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              specializations for specific plug-ins and functions (e.g. malloc,
              memcpy, memset), to overcome limitations due to their
              specifications.
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-   Kernel    [2020-02-25] support for ghost else blocks
-   Kernel    [2020-02-18] checks that ghost code does not modify the normal
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              control flow of the non-ghost program
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-*  Kernel    [2020-02-17] fixes issue that could prevent loading plug-ins on
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              Windows installation
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-   Kernel    [2020-02-14] -constfold now takes into account value
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              of const globals
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o   ACSL      [2020-02-13] Add possibility for ACSL extensions to alter the
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              sequence of untyped terms they receive from the parser. Make also
              possible to customize the short pretty printer of extensions.
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o   Kernel    [2020-02-13] Deprecated:
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                           - Logic_typing.register_*_extension
                           - Cil_printer.register_*_extension
                           - Cil.register_behavior_extension
                           Use Acsl_extension.register_* instead
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-   Eva       [2020-02-12] New option "-eva-domains <d1>,<d2>,..." to enable
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              several domains at once. The list of available domains is given
              in the help message of the option.
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o!  Eva       [2020-02-12] Simplifies abstract domain signature by removing the
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              Transfer functor.
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-*  Eva       [2020-02-12] Fixes the evaluation of logic predicates involving
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              empty sets.
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-   Eva       [2020-02-07] Supports the logic evaluation of quantifiers
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              introducing mathematical variables (integer or real).
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o!  Kernel    [2020-02-04] Removed FCBuffer, FCMap and FCSet. Use directly
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              OCaml stdlib modules Buffer, Map and Set instead.
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-   Eva       [2020-02-04] Renamed option -eva-malloc-functions into
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              -eva-alloc-functions. Also contains calloc and realloc by default.
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-*  GUI       [2020-01-24] Fix order of globals in the source panel.
-   Eva       [2020-01-23] Adds consistency checks on return and parameters
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              types between a builtin and the replaced C function.
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-   Eva       [2020-01-23] Subdivisions can now be enabled locally:
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              - through the new option -eva-subdivide-non-linear-function that
                overrides the global option for the given functions;
              - via /*@ subdivide N; */ annotations on specific statements.
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##################################
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Open Source Release 20.0 (Calcium)
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##################################
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-   Eva       [2019-11-25] In the summary, fixes the number of alarms by
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              category when the RTE plugin is used, and do not count logical
              properties in dead code as proven.
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-!  Kernel    [2019-10-31] More stringent verifications on the use of ghost
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              variable in non ghost-code. Fixes #2421
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-   MdR       [2019-10-31] New plug-in Markdown-Report (MdR) for markdown and
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              SARIF outputs
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-   Eva       [2019-10-23] In the summary, fixes the total number of functions
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              (and thus the computed analysis coverage).
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-   Eva       [2019-10-23] New option -eva-auto-loop-unroll N to unroll all
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              loops whose number of iterations can be easily bounded by <N>.
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-   Eva       [2019-10-21] New octagon domain inferring relations of the form
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              l ≤ ±X±Y ≤ e between pairs of integer variables X and Y. Enabled
              with option -eva-octagon-domain. Only infers relations between
              pairs of scalar variables occuring in a same instruction.
              Intra-procedural by default; octagons can be propagated through
              function calls with option -eva-octagon-through-calls.
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-   ACSL      [2019-10-04] Support for ghost parameters
-   Eva       [2019-10-04] Evaluates ACSL predicates \is_plus_infinity and
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              \is_minus_infinity.
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-   Kernel    [2019-10-04] Supports macro INFINITY and NAN.
o   Config    [2019-09-27] ocp-indent 1.7.0 is now used for indentation
o   Eva       [2019-09-16] Dynamic registration of abstract values and domains:
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              developers of new domains no longer need to modify Eva's engine.
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-*  Kernel    [2019-09-13] Fixes Hptmap on keys with id greater than 2^28.
-*  Makefile  [2019-09-12] Fixes #2378 - bytecode only compilation (patch
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              contributed by madroach) and use -thread where needed.
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-*  Eva       [2019-08-21] Fixes the reduction by the negation of \initialized
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              and \dangling predicates on imprecise lvalues.
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-*  Kernel    [2019-08-20] Fixes a rare but critical bug which occured when
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              Frama-C internally switched the current project in presence of >2
              projects and destroyed the old current project at about the same
              time: the Frama-C internal state became inconsistent and lead to
              unsound computations and crashes. It may be revealed to the
              end-user when using a long sequence of -then-replace (at least 3
              of them).
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-*  Kernel    [2019-08-20] Fixed sequence of -removed-projects and -then
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              options.
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o   Ptests    [2019-08-05] Add new MODULE directive for compiling and loading
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              an auxiliary OCaml module for a test
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-   Kernel    [2019-08-05] Add -keep-unused-types normalization option
-   Libc      [2019-08-05] Remove obsolete (and forcing cpp error) builtins.h
o!  Kernel    [2019-08-02] Functions over visitor's behaviors have been moved
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              from Cil into a new module Visitor_behavior. Apply the migration
              script potassium2calcium.sh to update your plug-ins automatically.
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o!  Sparecode [2019-07-26] Removed from Db. Use proper Sparecode API instead.
-!  Kernel    [2019-07-24] OCaml version greater than or equal to 4.05.0 required.
-   Kernel    [2019-07-24] Improve placeholders handling in -cpp-command
o!  Kernel    [2019-07-23] Types in Properties are now records and not tuples
-   Eva       [2019-07-09] Supports ACSL floating-point comparison operators
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              eq_float, le_float, eq_double, le_double, etc.
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o!  Kernel    [2019-06-28] removes AST constructors TCoerce, TCoerceE,
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              PLCoercion, PLCoercionE, Psubtype and PLsubtype
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-*  Kernel    [2019-06-20] fixes dangling ref when removing unused static local
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####################################
Open Source Release 19.0 (Potassium)
####################################

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-*  RTE       [2019-05-24] fixes a crash when visiting variable declarations
-   Eva       [2019-04-19] The new annotation /*@ split exp; */ enumerates the
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              possible values of an expression and continues the analysis
              for each of these value separately, until a /*@ merge exp; */
              is encountered. It is also possible to maintain this partitioning
              at all times with the option -eva-partition-value exp.
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-   Eva       [2019-04-19] New option -eva-partition-history N to delay the join
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              of abstract states for up to N merging points, thus keeping these
              states separate longer. Useful when a reasoning depends on the
              path taken to reach a control point, but can increase the analysis
              time exponentially in N.
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-   Eva       [2019-04-19] Loop unroll annotations now accept non-constant but
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              bounded expressions as the maximum number of unrollings to perform.
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-*  Kernel    [2019-04-09] Avoid crashing on one-letter attributes. Fixes #2432
-*  Obfuscator [2019-04-09] Also obfuscate formals in function pointer types.
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              Fixes #2433.
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-   Eva       [2019-04-05] Prints an analysis summary at the end, outlining the
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              analysis coverage and the number of errors, warnings and emitted
              alarms. It can be disabled with the option -eva-msg-key=-summary
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-   Eva       [2019-04-03] New option -eva-precision to globally configure the
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              analysis from 0 (fast but imprecise) to 11 (accurate but slow).
              A precision of 5 is often a reasonable trade-off. This meta-option
              automatically sets up other options that can also be overriden.
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-   Inout     [2019-04-01] Fix performance issue when initializing large arrays.
-   ACSL      [2019-03-08] Add check annotation, similar to assert except that
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              it does not introduce additional hypotheses on the program state
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-*  Makefile  [2019-03-07] Do not attempt to install .cmx on bytecode-only
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              architectures. Patch by M. Dogguy backported from Debian package
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-   Libc      [2019-03-05] Better specs and removal of half-implemented ifdef
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              that tried to take various POSIX versions into account
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-*  Kernel    [2019-03-05] Better detection of invalid goto in presence of VLA
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              (fixes #@499)
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-   GUI       [2019-03-04] Compatibility with lablgtk3 and improved handling of
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              some widgets
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-   ACSL      [2019-03-01] Clarifies which C variables are in scope under a
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              \at(·,L) (#@575)
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-   Libc      [2019-02-26] Ask clang not to warn about unknown FRAMA_C_MODEL
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              attribute when pre-processing frama-c's libc
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-*  Obfuscator [2019-02-26] Obfuscate logic types and logic constructors.
-*  Inout     [2019-02-21] Fixes operational input on const local initialization
o   RTE       [2019-02-21] RTE has a static API
o   Kernel    [2019-02-18] When registering extended ACSL annotations, one
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              must now indicate whether they should have a status.
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o   Kernel    [2019-02-05] Integer API moving closer to Zarith
-   Eva       [2019-01-19] New warning category for detecting loops without
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              'unroll' directive
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-   Eva       [2019-01-31] Ignore annotations with "no_eva" tag
-*  ACSL      [2019-01-19] Accept C identifiers that happen to be ACSL keywords
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              in volatile and reads clauses
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-   Eva       [2019-01-10] Improved precision on nested loops (by postponing
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              the widening on inner loops according to -eva-widening-period).
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-*  Aorai     [2019-01-04] Fixes #@586: avoid removing the initial state
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              of the automaton
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-   Kernel    [2019-01-03] Add attributes for loop statements to allow
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              distinguishing between for, while and dowhile loops.
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-!  Kernel    [2019-01-03] Add statement attributes (sattr) to the AST. They
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              are not printed by default, use -kernel-msg-key printer:attrs
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-!  Kernel    [2019-01-03] Improved precision of integer abstract bitwise
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              operators.
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-*  Eva       [2018-12-17] Fixes -eva-split-return on uninitialized or escaping
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              function returns when -eva-warn-copy-indeterminate is disabled.
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o   Kernel    [2018-12-11] New functions for retrieving major and minor version
-*  Kernel    [2018-12-04] Fixes AST integrity check wrt volatile accesses
-*  Kernel    [2018-11-21] Fixes #@553 - pretty-printing of basic asm template
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################################
Open Source Release 18.0 (Argon)
################################

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-!  Kernel    [2018-10-24] Log.error and Log.failure will eventually make
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              Frama-C exit with a non-zero status. Fixes #@552
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-   Kernel    [2018-10-24] More ergonomic command-line options for governing
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              warning categories statuses.
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-   Eva       [2018-10-24] Enable the memexec cache by default. It can be
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              disabled by option -eva-no-memexec.
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-   Eva       [2018-10-22] Improved performances when the symbolic locations
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              domain and the memexec cache are enabled.
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-   Eva       [2018-10-22] The memexec cache is now fully compatible with all
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              abstract domains provided by Eva. However, the binding to the
              Apron domains disable memexec.
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-   Eva       [2018-10-18] New experimental domain "numerors" inferring absolute
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              and relative errors of floating-point computations. Enabled by the
              option -eva-numerors-domain. Does not handle loops for now.
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-*  Kernel    [2018-10-18] Fixes parsing of compound initializers with anonymous
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              fields. Fixes #2384
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-*  Kernel    [2018-10-16] Consider that asm can change content of pointers
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              used as inputs when generating assigns clauses. Fixes #@458
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-   Eva       [2018-10-12] Remove option -obviously-terminates.
-   Kernel    [2018-10-05] New option -warn-invalid-bool, to warn when reading
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              trap representations of type _Bool.
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-   Eva       [2018-10-04] ACSL predicates with a "no_eva" tag are now ignored.
-   Eva       [2018-10-03] Warn about currently unsupported specifications
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              of some libc functions.
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-   Eva       [2018-10-02] Fix the gauges domain on weak bases.
-   Eva       [2018-10-02] Some fixes and improvements of the equality domain.
-*  Kernel    [2018-10-02] Rejects sizeof of an incomplete type. Fixes #@560.
-*  Kernel    [2018-09-26] Add attribute to allow writing into const lvals in
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              specific (aka C++ constructors and mutable fields) circumstances.
              Fixes #2395.
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-   Kernel    [2018-09-14] New warning (disabled by default) when multiple side
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              effects are unsequenced (CERT-EXP10-C recommandation).
              Fixes #@492
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-   Eva       [2018-09-13] Remove option -val-warn-left-shift-negative, and
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              comply with kernel option -warn-[left|right]-shift-negative.
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-   Kernel    [2018-09-13] New options -warn-left-shift-negative (enabled by
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              default) and -warn-right-shift-negative (disabled by default),
              to control the emission of alarms on shifts on negative integers.
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o!  Constant Propagation [2018-09-12] Removing Db API for Constant Propagation
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              plug-in. Calls to !Db.Constant_Propagation should be replaced by
              calls to Constant_Propagation.Api.
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-   Eva       [2018-09-12] Reduction of values leading to division by zero
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              alarms, when possible.
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-   Eva       [2018-09-11] Better reduction of floating-point values cast into
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              integer types when an alarm is emitted.
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-   Metrics   [2018-09-06] Add option -metrics-used-files, to help identify
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              unnecessary files given in the command line
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-   RTE       [2018-09-05] Remove option -rte-precond.
-   Eva       [2018-08-31] Supports the ACSL functions \min and \max.
-   Eva       [2018-08-30] Fixes the alarms on subtractions and comparisons of
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              pointers on weak bases (created by allocations in loops).
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-!  ACSL      [2018-08-28] Introduce extensions to global annotations and
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              better characterization of each extension kind.
              See development guide for more information
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-   Eva       [2018-08-28] All options of Eva start with -eva. Aliases to
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              previous option names preserve backward compatibility.
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-!  Eva       [2018-08-28] Rename plug-in shortname from 'value' to 'eva'. Eva
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              is now properly named Eva in all logs, in the GUI, and as the
              emitter of the alarms.
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-!  Kernel    [2018-08-23] Introduce Filepath dataype for more consistent
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              normalization of filenames
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-*  Kernel    [2018-08-23] Do not allow compound assignments to const variables
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              Fixes #@384
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-!  Kernel    [2018-08-23] Remove option -const-writable: const globals are
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              unconditionally constants
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-*  Eva       [2018-08-02] Deprecate option -val-warn-builtin-override in favor
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              of warning category builtins:override.
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-   Kernel    [2018-07-26] Fix compilation on OpenBSD
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              patch contributed by madroach. Fixes #2379
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-   Kernel    [2018-07-26] New option -remove-inlined to remove function(s)
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              after -inline-calls, add category @inline to refer to all
              functions with inline attribute (for both options).
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-   Eva       [2018-07-23] The debug category "garbled-mix" becomes a warning
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              category. Better track of garbled mix created by specification.
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-*  ACSL      [2018-07-23] Avoid removing cast of void ptr used as
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              argument of function expecting a ptr with known size. Fixes #@432
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o!  Kernel    [2018-07-23] Remove completely outdated module Dataflow.
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              Deprecated since 3+ years. Use Dataflow2 instead.
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-*  RTE       [2018-07-23] Stop generating spurious \initialized alarms.
Allan Blanchard's avatar
Allan Blanchard committed
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              Fixes #@429
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-*  Kernel    [2018-07-06] Respect relative order of labels and ACSL annots.
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              Fixes #@524
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o*  Ptests    [2018-07-02] Do not keep oracles for empty stderr. Fixes #@402
-*! ACSL      [2018-07-02] introduce ACSL operators \le_double, \ge_double, ...
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              in addition to \le_float, \ge_float, ... Remove overloading of
              \le_float that made it accept double as arguments. Fixes #@502
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-  Eva        [2018-06-28] New option -eva-report-red-statuses listing in
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              a csv file the properties invalid for some states of the analysis
              (as in the "Red Alarms" panel of the GUI).
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-  Eva        [2018-06-25] Release all builtins, including memset and memcpy,
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              as open-source.
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-  Eva        [2018-06-15] When a cvalue builtin is used, other domains use the
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              frama-c libc specification to interpret the call without losing
              too much information.
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-  Eva        [2018-06-14] The variables from the frama-c libc are no longer
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              shown in the initial state print.
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-  Eva        [2018-06-11] Improved precision of string builtins for strlen,
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              strchr and memchr.
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-  Eva        [2018-04-25] Renamed option -wlevel into -eva-widening-delay. New
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              option -eva-widening-period to control the number of iterations
              between two widenings.
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-  Eva        [2018-04-25] New propagation strategy that allows unrolling loops
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              even when the slevel has been exceeded. Unroll the N first loop
              iterations via the global option -eva-min-loop-unrolling N or via
              specific code annotations /*@ loop unroll N; */. The new strategy
              may affect analyses even without loop unrolling.

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############################################
Open Source Release 17.1 (Chlorine-20180502)
############################################
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-  Libc       [2018-07-05] Fix C++ compatibility for Frama-Clang plug-in
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############################################
Open Source Release 17.0 (Chlorine-20180501)
############################################
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-  Eva        [2018-04-25] Added scripts and templates to help automate case
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              studies (in $FRAMAC_SHARE/analysis-scripts)
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-* Typing     [2018-04-23] Stronger checks w.r.t. implicit conversions in
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              function pointers (must have compatible types) and assignments
              (modifiable lvalues). Fixes #@479
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-  Kernel     [2018-04-23] Added option -inline-calls for syntactic inlining
-* Kernel     [2018-04-19] Avoid crash when re-declaring a function with
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              formals after it has been called without any. Fixes #@454
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-  Kernel     [2018-04-13] Deprecate option -warn-decimal-float in favor of
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              warning category parser:decimal-float
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-  Kernel     [2018-04-13] More possible statuses for warning categories.
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              Fixes #@486
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o  Kernel     [2018-04-13] Change Cil.typeHasAttributeDeep into
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              Cil.typeHasAttributeMemoryBlock. Fixes #@489
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o* Logic      [2018-04-11] properly reset logic environment in case of typing
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              errors. Fixes #@326
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-  Eva        [2018-04-10] Interpret the logic constants \pi and \e.
-  Eva        [2018-04-06] Initialization of volatile pointers now keeps the
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              base addresses of the pointer (with arbitrary offsets).
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-  Eva        [2018-04-06] Fix the initialization of local volatile variables,
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              which can always have any value.
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-  Eva        [2018-04-06] In the logic, interpret the ACSL function \sign and
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              the constructors \Positive and \Negative.
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-  Metrics    [2018-04-05] When the value coverage is computed, also shows the
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              total number of statements by function in the filetree of the Gui.
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-  Gui        [2018-04-04] Added Preferences menu (shortcut: Ctrl+P) to set
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              themes for property bullets and external source editor
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o  Lib        [2018-03-30] New Rich_text module to create message with tags
o! Kernel     [2018-03-30] Never or rarely used Log functions have been
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              removed or deprecated
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-  Eva        [2018-03-15] Avoid enumeration on values with too many bases —
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              fixes a performance issue.
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-  Gui        [2018-03-07] The preconditions of a function call can now be
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              displayed before the call statement itself (click on status
              bullets with '+' or '-' to unfold/fold them)
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-  Typing     [2018-03-02] Support for CERT EXP46-C
-  Eva        [2018-03-01] Fix a soundness bug in the equality domain: do not
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              infer incorrect equalities between incomparable pointers,
              or between -0. and +0.
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-  Eva        [2018-02-26] deprecate option -val-warn-on-alarms in favor of
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              warning category alarm
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-  Kernel     [2018-02-26] deprecate option -continue-annot-error in favor of
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              warning category annot-error
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-! Kernel     [2018-02-26] introduce warning categories, with various
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              possible behaviors. Refactor management of debug categories
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-* RTE        [2018-02-23] Do not emit spurious 'idx < 0' assert
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              on gcc-style FAM. Fixes #@393
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-* Kernel     [2018-02-23] Handle anonymous struct/union init. Fixes #@376
-  Eva        [2018-02-22] Equalities can be propagated through function calls.
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              New options -eva-equality-through-calls[-function] to decide
              (globally or by function) which ones are kept from the caller.
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-  Eva        [2018-02-21] When an lvalue lv is assigned or leaves the scope,
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              the equality domain tries to replace lv by an equal term (if any)
              in the expressions depending on lv (instead of removing them).
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o! Occurrence [2018-02-20] Removing Db API for Occurrence plug-in. Calls to
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              !Db.Occurrence should be replaced by calls to Occurrence.Register.
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o! Impact     [2018-02-20] Removing Db API for Impact plug-in. Calls to
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              !Db.Impact should be replaced by calls to Impact.Register.
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o! Users      [2018-02-20] Removing Db API for Users plug-in. Calls to
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              !Db.Users should be replaced by calls to Users.Users_register.
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-  Eva        [2018-02-13] Removed *_alloced_return base created for functions
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              without body that return pointers. Such bases were imprecise
              and could be unsound in corner cases.
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-  Eva        [2018-02-08] Shifts of addresses now create garbled mixes (as any
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              other arithmetic operation).
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-  Logic      [2018-02-07] Ghost code now supports /@ ... @/ annotations
-  Eva        [2018-02-06] By default, do not emit pointer_comparable alarms for
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              non pointer operations. Always compute {0;1} for non pointer
              comparisons involving incomparable addresses.
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-  Eva        [2018-02-01] Warn about unsupported allocates clauses.
-  Eva        [2018-01-30] The subdivision of evaluations (through the option
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              -val-subdivide-non-linear) can subdivide the values of several
              lvalues simultaneously (on expressions such as x*x - 2*x*y + y*y).
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-  Kernel     [2018-01-24] Better renaming of variables in case of name
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              collision.
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o! Kernel     [2018-01-24] Keep information about syntactic scope of local
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              static variables. Accessed through
              Globals.Syntactic_search.find_in_scope.
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-! Eva        [2018-01-24] Renamed option -val-malloc-returns-null to
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              -val-alloc-returns-null, which also applies to realloc builtins.
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-  Kernel     [2018-01-16] Added option -json-compilation-database to help with
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              preprocessing. Requires yojson during Frama-C compilation.
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-  Eva        [2018-01-15] New function post_analysis in abstract domains,
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              called at the end of the analysis.
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-  Eva        [2018-01-11] The Simple_memory functor lets builtins interpret C
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              functions from the value of arguments to the result value.
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-  Eva        [2018-01-11] Evaluate the preconditions of the functions for which
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              a builtin is used; builtins do not emit alarms anymore.
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-! Kernel     [2018-01-11] Alarms Logic_memory_access and Valid_string, that
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              were only emitted by Eva builtins, are removed.
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-* ACSL       [2017-12-14] Reinforce rejection of void* pointer types in the
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              arguments of ACSL built-in constructs related to memory blocks
              and pointer dereferencing.
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-* ACSL       [2017-12-14] Reinforce rejection of implicit casts from array
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              types to pointer types in the arguments of ACSL built-in
              constructs related to memory blocks and pointer dereferencing.
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-* Kernel     [2017-12-13] Clean up typechecking environment when dropping
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              side-effects (in sizeof et al.). Fixes #@430
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o! Kernel     [2017-12-13] Old Cil.isCharType renamed as Cil.isAnyCharType.
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              New Cil.isCharType is now only true for plain char, neither signed
              nor unsigned. Derived functions (isCharPtr et al.) also updated
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-  Eva        [2017-12-12] Fix a crash when using -val-stop-at-nth-alarm.
-  Eva        [2017-12-07] Eva complies with option -warn-special-float, and
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              propagates or warns on NaN and infinite values accordingly.
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-! Kernel     [2017-12-07] Option -warn-not-finite-float renamed into
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              -warn-special-float and extended (accepts non-finite/nan/none).
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-  Kernel     [2017-12-07] Make some typechecking warnings controllable with
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              -kernel-msg-key keys.
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-  Eva        [2017-12-07] New option -val-skip-stdlib-specs, set by default.
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              When analyzing the body of a function from Frama-C's standard
              library, specifications will be skipped.
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-  Eva        [2017-11-28] New builtins for the single-precision mathematical
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              functions fmodf, cosf, sinf and atan2f.
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-! Eva        [2017-11-16] In the log, messages on preconditions are now
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              reported with the location of the call site.
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o! Eva        [2017-11-09] The Fval module now supports NaN and infinite values.
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              Major API changes in Fval, Ival and Cvalue.V (regarding casts,
              mostly)
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-o Eva        [2017-11-09] Option -all-rounding-modes has been removed
-* Eva        [2017-11-09] Fix bugs in builtins for cos and sin. The results
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              may be less precise than previously
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-  Eva        [2017-11-09] Various improvements in the handling of
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              floating-point variables: evaluation of \is_finite, computation
              of the bits of a floating-point range, etc
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-  Eva        [2017-11-09] New panel "Red alarms" in the GUI that shows all red
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              statuses emitted for some states during the analysis. They are not
              completely invalid, but should often be investigated first.
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-* Eva        [2017-10-27] Fix bug in the handling of non-explicitly volatile
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              fields inside volatile structs or unions

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##########################################
Open Source Release 16.0 (Sulfur-20171101)
##########################################
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-* Eva        [2017-10-27] Fix bugs when evaluating \ìnitialized, \dangling
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              and \separated on addresses of bitfields
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-* Eva        [2017-10-27] Fix bug in the handling of non-explicitly volatile
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              fields inside volatile structs or unions
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-  RTE        [2017-10-27] add option -rte-initialized to generate assertions
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              over read accesses to potentially uninitialized locations.
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-* RTE        [2017-10-16] Fix bounds of alarms emitted when downcasting to
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              bitfields (issue #?2314)
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o  Makefile   [2017-10-13] add gui-byte target to only build bytecode GUI
o  Kernel     [2017-10-11] sizeof() and alignof() applied to a function can now
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              be rejected when the compiler does not support this construct,
              depending on the fields sizeof_fun and alignof_fun of the machdep
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-* Kernel     [2017-10-11] More thorough checks on l-values with function type.
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              Non-sensical expressions are now rejected at parsing type.
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-  Eva        [2017-10-10] Uses assigns clauses to over-approximate the effects
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              of assembly statements. Warns if no assigns clause is provided.
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-* Eva        [2017-10-10] Fixes a performance issue in offsetmaps, that occured
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              when reading or copying values smaller than cells in large arrays.
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-  Eva        [2017-10-10] The backward propagation tries to reduce integer
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              values by considering separately the bounds of their intervals.
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-* Eva        [2017-10-10] Fixes an optimization issue where the reduction by a
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              loop invariant just after widenings could impede the convergence.
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-* Eva        [2017-10-10] Fixes a soundness bug where a loop invariant could be
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              wrongly proved correct in some marginal cases.
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+  Slicing    [2017-10-05] File slicing_types/*.ml moved into slicing subdir.
-  Gui        [2017-09-13] In the filetree, the filter menu appears on a right
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              click on the header, while a left click sorts the tree.
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-  Metrics    [2017-09-13] In the Gui, shows the percentage and the number of
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              dead statements (when computed) for each function of the filetree.
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-! Callgraph  [2017-09-01] Option -cg-init-roots replaced by -cg-service-roots
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              (almost equivalent); new options -cg-function-pointers (ignore
              function pointers; unsound) and -cg-roots (compute subgraphs).
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o! Eva        [2017-09-01] In abstract domains, compute_using_specification is
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              replaced by logic_assign, that interprets one \assigns clause.
              Complete specification are now interpreted through successive
              calls to evaluate_predicate, reduce_by_predicate and logic_assign.
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-  Eva        [2017-09-01] Various precision improvements in the interpretation
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              of the behaviors of a specification.
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-* Kernel     [2017-08-31] Fixes configure script on bytecode only architecture.
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              Initial version of the patch by Debian. Fixes #2325
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-* Kernel     [2017-08-31] Fix various typos in source code and user messages.
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              Patch by Debian. Fixes #2323
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-! Sparecode  [2017-08-31] Rename option -rm-unused-globals to
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              -sparecode-rm-unused-globals.
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o! ACSL       [2017-08-24] Refactor handling of logic labels in AST
-! Eva        [2017-08-03] Fix soundness (resp. precision) bug on big-endian
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              (resp. little-endian) architectures. This bug triggered on
              low-level code, typically when using bitfields
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-* Kernel     [2017-08-03] Strip bitfield attribute when performing integral
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              promotions on bitfields of size short or char. Fixes incorrect
              attributes on the resulting expression.
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-! ACSL       [2017-08-03] Explicitely disallow /* and */ in ACSL annotations.
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              Allows to re-use logic parser for parsing annotations in external
              files that can use /* ... */ as comments. As a consequence,
              expressions like y/*p are thus rejected, but this was already the
              case when -pp-annot is activated (default for .c files) and can
              be fixed easily in y / *p (as it is pretty-printed)
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-* Kernel     [2017-07-29] Fix unmarshalling of save files that contain more
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              than 4Gb of uncompressed data. Patch from TIS-interpreter.
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-* Eva        [2017-07-27] Fix performance issue with the equality domain.
-! Kernel     [2017-08-28] Fix invalid eids on code generated through loop
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              unrolling
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-! Slicing    [2017-08-28] Fix invalid eids on code generated through option
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              -slicing-level >= 2
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-! Eva        [2017-07-28] Fixed memory leak with option
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              -val-subdivide-non-linear
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o! Slicing    [2017-08-01] Removing Db API for Slicing plug-in. Calls to
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              !Db.Slicing should be replaced by calls to Slicing.Api.
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-o! Slicing   [2017-07-27] Removing deprecated '-slice-option' and related
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              !Db.Slicing.Projet.print_exported_project. Minor changes into
	      !Db.Slicing.Projet.extract.
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o! Scope      [2017-07-27] Removing Db API for Scope plug-in. Calls to
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              !Db.Scope should be replaced by calls to Scope.
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o! Report     [2017-07-24] Removing Db API for Report plug-in. Calls to
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              !Db.Report.print should be replaced by calls to
              Report.Register.print.
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-  RTE        [2017-07-17] Emits overflow alarms on unsigned left shift when
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              -warn-unsigned-overflow is enabled.
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-  Eva        [2017-07-17] Emits overflow alarms on unsigned left shift when
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              -warn-unsigned-overflow is enabled.
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-  Kernel     [2017-07-10] Composite types are now required to have equal tags
619
              as per the C standard; no more support for isomorphic structs.
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-  Eva        [2017-07-01] In the GUI, the "Values" panel displays the values
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              computed by using the properties inferred by all enabled domains.
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-! Eva        [2017-06-30] Better handling of function alloca(), via builtin
623
              Frama_C_alloca.
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-* Eva        [2017-06-28] The cvalue states saved after each statement are now
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              properly deleted when an Eva parameter is changed in the GUI.
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o  Eva        [2017-06-26] New functor in domains/simple_memory.ml to build a
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              complete domain from a value abstraction. The abstract states link
              each scalar variable of a program to an abstract value.
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-  Eva        [2017-06-26] New sign domain for demonstration purposes only.
-* Kernel     [2017-06-09] Parser now handle mixed concatenation of
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              string and wstring. Fixes #@1467
632
-  Eva        [2017-06-07] The subdivision of the evaluation of non-linear
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              expressions (through the -val-subdivide-non-linear option) also
              applies to the new evaluations requested by the equality domain.
635
-* Eva        [2017-06-14] Fix a crash when downcasting pointer values with
636
              the option -val-warn-signed-converted-downcast enabled.
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-* Eva        [2017-06-14] Fix missing alarms when downcasting pointer values.
-o Eva        [2017-05-24] The argument ~with_alarms for functions of Db.Value
639
              is now optional, and will be removed in a later version.
640
*  Eva        [2017-05-24] Fix soundness bug in string builtins where some
641
              invalid offsets did not generate alarms.
642
-  Eva        [2017-05-22] Removes all effects of the special functions
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              Frama_C_[dump|show]_each on the analyses: no alarms are emitted
              and the states are never reduced on these calls.
645
-  Eva        [2017-05-22] Frama_C_dump_each prints the state of each available
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              domain whose log category is enabled.
647
-  Eva        [2017-05-22] New directive Frama_C_domain_show_each prints the
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              internal properties about the arguments inferred by each available
              domain whose log category is enabled.
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o! Eva        [2017-05-22] Abstract domains have to provide a log category and
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              a function show_expr that prints the internal properties inferred
              about an expression.
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-  Kernel     [2017-05-18] Added option -print-return to inline gotos to return
-  RTE        [2017-05-12] add -warn-not-finite-float for checking
655
              that infinite and NaN floats are not produced.
656
-! Kernel     [2017-05-17] qualifiers are dropped from the return type of
657
              functions, as they make no real sense
658
-* Kernel     [2017-04-27] stop removing const attribute on local variables.
659
              Fixes #@301
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o! Kernel     [2017-04-27] Remove needless repetition of declared logic labels
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              in Tapp and Papp nodes. Fixes #@274
662
o! Kernel     [2017-04-27] Completely separate types between Cil_types and
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              Logic_ptree, removing needless polymorphism
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-  Eva        [2017-04-06] More precise evaluation of \initialized and
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              \dangling predicates.

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##############################################
Open Source Release 15.0 (Phosphorus-20170501)
##############################################
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-* Eva        [2017-05-08] Fix widening in the gauges domain, in particular with
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              nested loops and pointers that change base address through
              iterations
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-* Eva        [2017-04-25] Perform widening in the symbolic locations domain.
-* Eva        [2017-04-24] Fixes a crash when backward-propagating an imprecise
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              value on a 32-bits floating point addition. A non-single precision
              value was erroneously returned.
678
-* Eva        [2017-04-05] Fixes a crash with the -val-subdivide-non-linear
679
              option, on subdivisions of evaluations involving pointer values.
680
-! Eva        [2017-03-31] Renamed dynamic allocation builtins for
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              improved consistency. In particular, Frama_C_alloc_size
              becomes Frama_C_malloc_fresh.
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-  Eva        [2017-03-31] New option -val-builtins-list
-* Scope      [2017-03-31] Fix bug in the functions of Db.Scope in presence of
685
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              alarms refering to volatile memory locations, or to variables
              that leave scope. Also impacts Eva option -remove-redundant-alarms
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-  Eva        [2017-03-31] Activate option -remove-redundant-alarms by default.
-  Inout      [2017-03-28] Option -inout-callwise is now always active, and will
689
              be removed in a later version
690
-* Inout      [2017-03-28] Prevent formal variables of functions with only a
691
              specification from leaking into results
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-  Kernel     [2017-03-28] Dynlink is now mandatory, no degraded static mode.
o! Eva        [2017-03-17] Incompatible API changes in module Cvalue.Model.
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              Functions named 'unspecified' have been renamed into
              'indeterminate', and some arguments have been removed.
696
o! Gui        [2017-03-10] Signature change for constructor
697
              Pretty_source.PVDecl
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-! Kernel     [2017-03-10] Explicit AST nodes to mark local variables
699
              initialization.
700
-! Kernel     [2017-03-10] Better handling of VLA (use explicit function calls
701
              to mark deallocation of VLA at appropriate program points)
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-* Callgraph  [2017-03-10] Fixes inverted callers/callee in indirect calls
-! Eva        [2017-03-09] Option -val-show-progress is now unset by default
-* Eva        [2017-03-08] Fix bug #2277. The initial state of the analysis
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              now depends on all relevant options, including kernel options
              -warn-...
707
-! Variadic   [2017-03-08] Change of command line argument names for the
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              plugin Variadic. The new names are more expressive and avoid
              confusions with the plugin Value. Use -variadic-translation or
              -variadic-no-translation instead of -va or -no-va.
711
-! Value      [2017-03-07] Support for the legacy value analysis has been
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              abandoned, Eva is now always active. Option -no-eva has been
              removed.
714
-* Eva        [2017-03-07] Unsound support for recursion, through option
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              -val-ignore-recursive-calls. The support of recursion through
              the use of 'assigns' clauses, previously available in Value,
              was unsound and has been removed
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-! Kernel     [2017-03-01] Zarith library is now required
-* Kernel     [2017-02-24] Fix crash when loading a saved file without a plug-in
720
              which has previously emitted a status with a tuning parameter.
721
-  Eva        [2017-02-06] New (internal) mechanism to handle C functions'
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              return values. Messages now mention \result<foo> for the
              value returned by 'foo'.
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-  Variadic   [2017-02-08] The plugin is now enabled by default. Use the
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              option -variadic-no-translation to keep the original behaviour.
              The specification generated for the fprintf function family is
              now more accurate.
728
-  Kernel     [2017-01-26] New option -print-libc, to expand include directives
729
              for files in the Frama-C stdlib (no longer expanded by default).
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-* Obfuscator [2017-01-19] Fix typo in help message (bts #2269).
-  Kernel     [2017-01-09] Bash completion for Frama-C options. See #@154.
-* Kernel     [2016-12-09] Fixes oneret normalization in presence of
733
              statement contract and absence of return. See #@255 and #2235.
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-  Kernel     [2016-12-06] New option -print-machdep (help group).
-  Rte        [2016-11-25] Remove option -rte-all.
-* Cil        [2016-11-20] Pointer subtractions with arguments of incompatible
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              types are now refused. The resulting expression is typed as
              ptrdiff_t instead of int.
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-  Value      [2016-11-18] Widen hints directives @widen_hints now accept
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              arbitrary l-values (evaluated at analysis time) in place of
              variables.
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-* Kernel     [2016-11-17] Fixed some issues with #pragma pack() behavior,
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              in both GCC and MSVC machdeps. Also fixed some related issues
              with __aligned__ and __packed__ attributes (including bts #2249).
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-o Kernel     [2016-11-17] Utility API for checking volatile attribute in Cil.
-  Metrics    [2016-11-17] Programmatic API for some functions via Metrics.mli.
-  Kernel     [2016-11-07] New option -no-autoload-plugins (equivalent to old
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              -no-dynlink); mostly for internal use.
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-! Kernel     [2016-10-19] Stricter verification for extern, static and inline
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              specifiers (support for CERT DCL-36-C coding rule)
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o* Eva        [2016-10-22] Functions Db.Value.fun_set_args and
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              Db.Value.globals_set_initial_state are now compatible with Eva.

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###########################################
Open Source Release 14.0 (Silicon-20161101)
###########################################
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-*! Eva       [2016-10-29] Fix soundness bug on statements with RTE or
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              programmatically-added user assertions (bts #2258). This
              leads to minor changes in the way states are propagated when
              all slevel has been consumed. Also, consolidated states now
              return the abstraction before any reduction by assertions or
              alarms.
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-* Eva        [2016-10-20] Fix bug in the bitwise domain, on some applications
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              of the & and | operators
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-  Value      [2016-10-20] New (experimental) option -val-builtins-auto, to
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              automatically replace known C functions by builtins. Will
              be set by default in Phosphorus.
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-* Value      [2016-10-19] Frama_C_cos and Frama_C_sin builtins are now
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              precise by default. The former Frama_C_cos / Frama_Csin_precise
              have been removed
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-* Kernel     [2016-10-18] Fix bug when pretty printing an ACSL term
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              "divisor / *p" (bts #2250).
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-  Eva        [2016-10-18] New experimental Gauges domain, that relates
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              integer variable to loop counters.
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-! Kernel     [2016-10-15] Fix major bug in the backward dataflow of module
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              Dataflows
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-! Scope      [2016-10-15] Fix bug that might lead to unsoundness and / or
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              looping in 'Datascope' functionality (#!235)
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-* Eva        [2016-10-11] Prevent incorrect reductions on memory locations
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              with volatile qualifier
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-! Value      [2016-10-11] Option -val-warn-copy-indeterminate is now set by
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              default. See command-line help if you want to deactivate it.
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-  Kernel     [2016-10-07] Fix bug that may occur when modifying several times
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              command line-options taking functions as argument (issue #@109)
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-! Libc       [2016-10-07] Functions in share/libc.c have been inlined into
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              the proper .c files under share/lib