https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108721
Bug ID: 108721
Summary: csmith: really old bug with -O2
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 54436
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54436&action=edit
C source code
For the attached C code, generated from csmith, does this:
$ ../results/bin/gcc -w -O1 bug884.c && ./a.out
checksum = 749D4681
$ ../results/bin/gcc -w -O2 bug884.c && ./a.out
checksum = F8019D24
$
The bug seems to exist since sometime before 20220206, about a year ago.
$ ../results.20220206/bin/gcc -w -O2 bug884.c && ./a.out
checksum = F8019D24
$
The git hash for 20220206 is g:8eb329e963593342855b6072e5692659107337b7
