https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116458
--- Comment #4 from David Binderman <dcb314 at hotmail dot com> --- (In reply to Alexander Monakov from comment #3) > David, thanks for Cc'ing me and for running Valgrind builds! You are welcome. Its a normal weekly part of gcc testing for me. > "Wobbly values" aside, judging from how this never arised with other > vectorized helpers, Valgrind treats some instructions optimistically? I saw the problem first in a git development version of valgrind, but was able to duplicate it with the released version 3.23.0. I see no problems in this area with asan and ubsan.