https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99955
Bug ID: 99955
Summary: gcc.c-torture/execute/pr92618.c violates strict
aliasing rules
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
The above execution test trips the strict aliasing warnings:
aarch64-linux-gnu-gcc -O2 -Wall gcc/testsuite/gcc.c-torture/execute/pr92618.c
-static
gcc/testsuite/gcc.c-torture/execute/pr92618.c: In function ‘baz’:
gcc/testsuite/gcc.c-torture/execute/pr92618.c:44:4: warning: dereferencing
type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
44 | *(__m128i *) &a[0] = c;
| ^~~~~~~~~~~~~~~~~
gcc/testsuite/gcc.c-torture/execute/pr92618.c:45:4: warning: dereferencing
type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
45 | *(__m128i *) &a[2] = d;
| ^~~~~~~~~~~~~~~~~
but it doesn't set -fno-strict-aliasing. It looks like the test should set
-fno-strict-aliasing.
