> On 12 Jan 2023, at 00:26, James Addison via Gcc <gcc@gcc.gnu.org> wrote: > > Hi, > > During GCC 12.2.0 compilation of a file that includes[1] immintrin.h > with both code-optimization and uninitialized-variable-warnings > enabled, a warning is emitted: > > /usr/lib/gcc/x86_64-linux-gnu/12/include/avx512erintrin.h:55:20: > warning: ‘__W’ is used uninitialized [-Wuninitialized] > > The minimal repro compilation command appears to be: > > gcc -O -Wuninitialized -mavx512er -mavx512pf > ./numpy/distutils/checks/cpu_avx512_knl.c > > My question is: does the warning indicate a possible bug that should > be reported, or is there a reason that the relevant code[2] does not > initialize the variable (for example, for performance reasons)?
See also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105593, might be the same thing?
signature.asc
Description: Message signed with OpenPGP
