mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
ffe308e4fc
x86_64 libmvec tests have been failing to build lately with GCC mainline with -Wuninitialized errors, and Markus Trippelsdorf traced this to an aliasing issue <https://sourceware.org/ml/libc-alpha/2017-03/msg00169.html>. This patch fixes the aliasing issue, so that the vectors-of-pointers are initialized using a union instead of pointer casts. This also fixes the testsuite build failures with GCC mainline. Tested for x86_64 (full testsuite with GCC 6; testsuite build with GCC mainline with build-many-glibcs.py). * sysdeps/x86/fpu/test-math-vector-sincos.h (INIT_VEC_PTRS_LOOP): Use a union when storing pointers. (VECTOR_WRAPPER_fFF_2): Do not take address of integer vector and cast result when passing to INIT_VEC_PTRS_LOOP. (VECTOR_WRAPPER_fFF_3): Likewise. (VECTOR_WRAPPER_fFF_4): Likewise. |
||
|---|---|---|
| .. | ||
| bits | ||
| fpu | ||
| cacheinfo.c | ||
| cpu-features-offsets.sym | ||
| cpu-features.c | ||
| cpu-features.h | ||
| dl-get-cpu-features.c | ||
| elide.h | ||
| fpu_control.h | ||
| init-arch.h | ||
| libc-start.c | ||
| linkmap.h | ||
| Makefile | ||
| string_private.h | ||
| tininess.h | ||
| tst-get-cpu-features-static.c | ||
| tst-get-cpu-features.c | ||
| Versions | ||