https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109031
Bug ID: 109031
Summary: csmith: possible bad code with -O2
-fno-strict-aliasing
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 54588
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54588&action=edit
C source code
For the attached C code:
$ for i in ~/gcc/results.2022*/bin/gcc
$ do
$ echo $i
$ $i -O2 -fno-strict-aliasing -w bug892.c; ./a.out 1 2>&1 | fgrep g_50;
$ done
/home/dcb36/gcc/results.20220306/bin/gcc
...checksum after hashing g_50 : 646CF84D
/home/dcb36/gcc/results.20220403/bin/gcc
...checksum after hashing g_50 : 646CF84D
/home/dcb36/gcc/results.20220501/bin/gcc
...checksum after hashing g_50 : 646CF84D
/home/dcb36/gcc/results.20220605/bin/gcc
...checksum after hashing g_50 : C21BF3F9
/home/dcb36/gcc/results.20220703/bin/gcc
$
The git hash for 20220501 is g:75bbc3da3e5f75f683fa33e309045c582efd20eb
and for 20220605 is g:ad6919374beafac4ec1a2f8059620f261019b02f
