https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110426
Bug ID: 110426
Summary: Missing buffer overflow warning with function pointer
that has the alloc_size attribute
Product: gcc
Version: 13.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: analyzer
Assignee: dmalcolm at gcc dot gnu.org
Reporter: alexhenrie24 at gmail dot com
Target Milestone: ---
I expected to get a warning when compiling this program with -fanalyzer:
#include <stdlib.h>
extern void* (*my_alloc)(size_t) __attribute__ ((alloc_size (1)));
int main(void)
{
int *x = my_alloc(1);
x[0] = 0; // buffer overflow!
return 0;
}
There is a warning if I call malloc instead of my_alloc.
