Created attachment 177566 [details] screenshot of gdb Dear valgrind developers, The instruction 0xd99c42c index. z0.d, #0, #1 seems not to be handled by valgrind-3.24.0 I get an "illegal instruction" error message. Please come back to me if you have any question. Sincerely Andreas Jocksch uname -a Linux santis-ln001 5.14.21-150500.55.65_13.0.74-cray_shasta_c_64k #1 SMP Mon Sep 9 09:48:48 UTC 2024 (ba86e71) aarch64 aarch64 aarch64 GNU/Linux gcc-12.3.0