https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85253
Dominique d'Humieres <dominiq at lps dot ens.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P4 Status|UNCONFIRMED |NEW Last reconfirmed| |2018-04-06 CC| |jvdelisle at gcc dot gnu.org, | |tkoenig at gcc dot gnu.org Known to work| |7.0.1 Target Milestone|--- |8.0 Summary|asan detects |[8 Regression] asan detects |heap-buffer-overflow in |heap-buffer-overflow in |matmul_r4.c |matmul_r4.c Ever confirmed|0 |1 Known to fail| |8.0.1 --- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- It looks to be a gcc8 regression that occurred between revision r245276 (7.0.1) and r254086 (8.0). I see ==28006==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x619000000984 at pc 0x000105e887a3 bp 0x7ffeea337be0 sp 0x7ffeea337bd8 WRITE of size 4 at 0x619000000984 thread T0 #0 0x105e887a2 in matmul_r4_avx matmul_r4.c:365 ...