[Bug tree-optimization/78248] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu (in both 32-bit and 64-bit modes)

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78248

--- Comment #10 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Martin Liška from comment #8)

> I've already tried running the test-case in valgrind. But I can't see the
> problem :) May you please paste -S file and --verbose output?

Done.

What I find iteresting at the segfault is the index e:

Program received signal SIGSEGV, Segmentation fault.
main () at pr78248.c:16
16                  d = b[e];
(gdb) p e
$1 = 492

although we declare:

int b[1], c = 2, d, e, f, g;