https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120028
Bug ID: 120028
Summary: SIGSEGV at runtime from large static array
initialization accepted silently by GCC
Product: gcc
Version: 13.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: mario.rodriguezb1 at um dot es
Target Milestone: ---
I am not sure it this is exactly a bug, but i have seen that it only occurs in
gcc, not in clang, and exactly in some versions of gcc only, from 4.7.3 to
13.3. If compiled with -O3 it is stopped by an SIGSEV, if not a gcc: internal
compiler error arises. Locally i get: collect2: fatal error: ld terminated with
signal 9 [Killed]
```
#include <stdlib.h>
int main() {
static const struct {
int (*func)(void);
} ptrs[0xFFFFFFFF] = { { malloc } };
ptrs[200].func();
return 0;}
```
To quickly reproduce:
Without -O3
https://gcc.godbolt.org/z/vP3Y4noEj
With -O3
https://gcc.godbolt.org/z/fzjnxvvGv
