https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109192
Bug ID: 109192
Summary: timeout with -g -O3 -fno-var-tracking ?
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 54705
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54705&action=edit
C source code
The attached C code can't be compiled in ten minutes, when -O3
-fno-var-tracking is used:
$ (ulimit -t 600; time /home/dcb36/gcc/results/bin/gcc -w -c -O3
-fno-var-tracking bug898.c)
gcc: fatal error: Killed signal terminated program cc1
compilation terminated.
real 10m6.003s
user 9m59.649s
sys 0m0.103s
It is fine when -O3 is replaced by -O2:
$ (ulimit -t 600; time /home/dcb36/gcc/results/bin/gcc -w -c -O2
-fno-var-tracking bug898.c)
real 0m0.453s
user 0m0.434s
sys 0m0.014s
The bug first seems to occur sometime between 20230101 and 20230221.
$ for i in ~/gcc/results.20230*/bin/gcc; do echo $i; (ulimit -t 60; time $i -c
-w -O3 -fno-var-tracking bug898.c); done
/home/dcb36/gcc/results.20230101/bin/gcc
real 0m1.140s
user 0m0.678s
sys 0m0.021s
/home/dcb36/gcc/results.20230221.asan.ubsan/bin/gcc
gcc: fatal error: Killed signal terminated program cc1
compilation terminated.
real 1m0.606s
user 0m59.990s
sys 0m0.016s
Git hashes are g:4f1314f547f69d3a2b1f16ce301267e3bfb4e427 and
g:a804419c89db9e1c, a range of some 1,800 commits.
