https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112442
Bug ID: 112442
Summary: Segfault from casting a ptr when using -O2
Product: gcc
Version: 13.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: adam.andersson at elisapolystar dot com
Target Milestone: ---
Created attachment 56532
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56532&action=edit
Small testprogram that reproduces the issue
I have attached a simple program that segfaults when compiling with GCC 13 and
-O2
Compiled with: gcc -v -save-temps -O2 gcc-segfault.c
How to reproduce:
$ gcc -O2 a-gcc-segfault.i -o test && ./test
Segmentation fault (core dumped)
This does not happen in GCC 12 or earlier, or if I use -O1 or no optimization.
Also doesnt happen if I remove the cast to unsigned char*, or if I inline the
test-function.
My system:
Linux adam1 6.5.9-arch2-1 #1 SMP PREEMPT_DYNAMIC Thu, 26 Oct 2023 00:52:20
+0000 x86_64 GNU/Linux
gcc version 13.2.1 20230801 (GCC)
