access to volatile variable is eliminated from AST
ID0001589: This issue was created automatically from Mantis Issue 1589. Further discussion may take place here.
| Id | Project | Category | View | Due Date | Updated |
|---|---|---|---|---|---|
| ID0001589 | Frama-C | Kernel | public | 2013-12-26 | 2014-03-13 |
| Reporter | pascal | Assigned To | virgile | Resolution | fixed |
| Priority | normal | Severity | minor | Reproducibility | always |
| Platform | - | OS | - | OS Version | - |
| Product Version | Frama-C GIT, precise the release id | Target Version | - | Fixed in Version | Frama-C Neon-20140301 |
Description :
~ $ cat n.c volatile int x;
int main(){ x; x; x; } ~ $ ~/ppc/bin/toplevel.opt -print n.c [kernel] preprocessing with "gcc -C -E -I. n.c" /* Generated by Frama-C */ int volatile x; int main(void) { int __retres; __retres = 0; return __retres; }
This transformation does not respect the semantics of the program because x is volatile.