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0002413Frama-CPlug-in > E-ACSLpublic2018-12-05 15:112018-12-06 12:41
rmalak 
signoles 
normalmajoralways
confirmedopen 
x86_64Linux 4.18 OCaml 4.07.0Debian Sid
Frama-C 18-Argon 
 
0002413: missing E-ACSL code when ignoring asm annotation
Hi,

//////////////// asm.c
void func()
{
    int i = 0;
    int *ptr=&i;
    /*@ assert \valid(ptr); */
    *ptr = 0;
}
int main(int argc, char **argv)
{
    func();
    __asm__ ("");
    return 0;
}
////////////////
$ frama-c -machdep gcc_x86_64 asm.c -e-acsl -then-last -print -ocode eacsl_asm.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 asm.c (with preprocessing)
[e-acsl] beginning translation.
[e-acsl] asm.c:11: Warning:
  E-ACSL construct `asm' is not yet supported. Ignoring annotation.
[e-acsl] translation done in project "e-acsl".

$ gcc -DE_ACSL_SEGMENT_MMODEL -Wno-attributes -I$(frama-c -print-share-path)/e-acsl/ -o asm eacsl_asm.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

$ ./asm
Assertion failed at line 5 in function func.
The failing predicate is:
\valid(ptr).
Aborted
When one comments the __asm__ line and compare the generated code, it seems that the list of missing functions are :

__e_acsl_memory_clean
__e_acsl_store_block
__e_acsl_delete_block
__e_acsl_initialize
__e_acsl_full_init

The problem is similar on Chlorine and Argon.

i and ptr could also be global static variables, it doesn't change anything

No tags attached.
c asm.c (186) 2018-12-05 15:11
https://bts.frama-c.com/file_download.php?file_id=1292&type=bug
Issue History
2018-12-05 15:11rmalakNew Issue
2018-12-05 15:11rmalakStatusnew => assigned
2018-12-05 15:11rmalakAssigned To => signoles
2018-12-05 15:11rmalakFile Added: asm.c
2018-12-05 16:46signolesNote Added: 0006690
2018-12-05 16:46signolesStatusassigned => confirmed
2018-12-06 12:41rmalakNote Added: 0006692

Notes
(0006690)
signoles   
2018-12-05 16:46   
Thank you for the report.

A workaround consists in adding the option -e-acsl-full-mmodel to E-ACSL (or -M when using e-acsl-gcc.sh).
(0006692)
rmalak   
2018-12-06 12:41   
Thanks !