| Summary: | -fstack-check + large frame == SIGSEGV | ||
|---|---|---|---|
| Product: | gcc | Reporter: | Paul Pluzhnikov <ppluzhnikov> |
| Component: | middle-end | Assignee: | Not yet assigned to anyone <unassigned> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | ebotcazou, gcc-bugs, ppluzhnikov |
| Priority: | P3 | ||
| Version: | 4.4.0 | ||
| Target Milestone: | --- | ||
| Host: | i686-unknown-linux-gnu | Target: | i686-unknown-linux-gnu |
| Build: | i686-unknown-linux-gnu | Known to work: | |
| Known to fail: | Last reconfirmed: | ||
fstack-check is known to be broken on x86 GNU/Linux, see PR 13757. So I don't think this is a regression even. |
Discovered as a failure of GDB test: FAIL: gdb.base/stack-checking.exp: continue to breakpoint: breakpoint for big frame With current SVN head @144426: /* t.c */ void foo() { char buf[524188]; } int main() { foo(); return 0; } i686-unknown-linux-gnu-gcc t.c -fstack-check && ./a.out Segmentation fault AFAICT, this is a regression from 4.3.1 Problem also happens in x86_64-unknown-linux-gnu. Minimal size to crash appears to be about 57058.