Checking number of arguments passed to C functions
ID0000552: This issue was created automatically from Mantis Issue 552. Further discussion may take place here.
| Id | Project | Category | View | Due Date | Updated |
|---|---|---|---|---|---|
| ID0000552 | Frama-C | Kernel | public | 2010-08-02 | 2010-12-17 |
| Reporter | pascal | Assigned To | virgile | Resolution | fixed |
| Priority | normal | Severity | feature | Reproducibility | always |
| Platform | - | OS | - | OS Version | - |
| Product Version | Frama-C Boron-20100401 | Target Version | - | Fixed in Version | Frama-C Carbon-20101201-beta1 |
Description :
There currently isn't much checking of function arguments in the front-end. The following program is accepted, although it passes the wrong number of arguments for both calls to retint:
int retint(int x ) { int __retres ; __retres = 42 + x; return (__retres); }
int main(int c ) { int x ; int tmp ; x = retint(); tmp = retint(c,c); return (tmp); }
Arguments for not implementing this feature: there are perfectly good compilers to check for this, and not having rigid rules in place may even help with older code containing variadic functions. I am not sure when the current convention for declaring variadic functions became standardized, and it may not have been from the beginning.