missing E-ACSL code, control flow graph, function pointer

ID0002416: This issue was created automatically from Mantis Issue 2416. Further discussion may take place here.

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Id	Project	Category	View	Due Date	Updated
ID0002416	Frama-C	Plug-in > E-ACSL	public	2018-12-11	2018-12-11

Reporter	rmalak	Assigned To	signoles	Resolution	open
Priority	normal	Severity	minor	Reproducibility	always
Platform	x86_64	OS	Linux 4.18 Ocaml 4.07.0	OS Version	Debian Sid
Product Version	Frama-C 18-Argon	Target Version	-	Fixed in Version	-

Description :

Hi,

Is there a workaround for the function pointer limitation

//////////////// cfg.c void func(void) { int i = 0 ; int ptr = &i; /@ assert \valid(ptr); */ *ptr = 0 ; }

int main(int argc, char **argv) { void (*ptr_func)(void) = &func; (*ptr_func)(); return 0; } ////////////////

Additional Information :

I would like to find a solution that do not involve :

• the use of EVA

OR

• modifying the code

Steps To Reproduce :

$ frama-c -machdep gcc_x86_64 cfg.c -e-acsl -then-last -print -ocode cfg.e-acsl.c [kernel] Parsing FRAMAC_SHARE/e-acsl/e_acsl_gmp_api.h (with preprocessing) [kernel] Parsing FRAMAC_SHARE/e-acsl/e_acsl.h (with preprocessing) [kernel] Parsing cfg.c (with preprocessing) [e-acsl] beginning translation. [e-acsl] cfg.c:12: Warning: function pointers may introduce too limited instrumentation. [e-acsl] translation done in project "e-acsl".

$ gcc -DE_ACSL_SEGMENT_MMODEL -Wno-attributes -I$(frama-c -print-share-path)/e-acsl/ -o cfg.e-acsl cfg.e-acsl.c $(frama-c -print-share-path)/e-acsl/e_acsl_rtl.c $(frama-c -print-share-path)/../../lib/libeacsl-dlmalloc.a $(frama-c -print-share-path)/../../lib/libeacsl-gmp.a -lm

$ ./cfg.e-acsl Assertion failed at line 5 in function func. The failing predicate is: \valid(ptr). Aborted