'Indeterminate' alarms are alarms about uninitialized memory, escaping pointers
and special floating-point values (infinite and NaN).

These alarms are emitted for functions specified by -eva-warn-copy-indeterminate
option, which is @all by default. These alarms can be disabled for some function
by -eva-warn-copy-indeterminate=-f, in which case they are also disabled for
the argument expressions of calls to [f].

However:
- the @all default value did not include functions without definition
  (for which a specification or a builtin is used).
- 'indeterminate' alarms were emitted anyway for the arguments of calls to
  functions without definition, except for builtins.
So no indeterminate alarms were emitted for the argument expressions of calls
to builtins (unless their definitions were included).

This commit fixes this behavior:
the @all default of -eva-warn-copy-indeterminate option include all functions
and special case for functions without definition or builtins are removed.

It still avoids to emit surch alarms on Eva directives such as Frama_C_show_each.

Makes [eval_term] and [reduce_by_predicate] mutually recursive. This is needed
to interpret set comprehension.

Makes some exceptions local.

Cleans up and saves partial results on sigint signal.
Signal handlers are now registered at the start of an analysis, and previous
signal handlers are restored at the end.
New function [protect f ~cleanup] in value_util, that runs [f] and applies
[cleanup] in case of a user interruption or a Frama-C error, only if option
-save is set.

Catches Log.AbortError and Log.AbortFatal to properly clean-up the analysis
states on a failure.

Andre Maroneze authored 3 years ago and David Bühler committed 3 years ago

The Linux manpage for tan states that only a floating-point exception
(FE_OVERFLOW) occurs in case of result overflow, but the POSIX manpage mentions
that errno can be set to ERANGE.

Renames the function [allowed_machdep].

Removes exception ParseIntError.
Restores the previous behavior of parseInt that aborts Frama-C in case of
failure.
Renames parseInt_opt into parseIntRes that returns [Error message] in
case of failure.