https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86704
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|WAITING |NEW
CC| |jvdelisle at gcc dot gnu.org,
| |tkoenig at gcc dot gnu.org
Known to work| |7.3.0
Target Milestone|--- |8.3
Summary|Segmentation fault when |[8/9 Regression]
|using matmul in combination |Segmentation fault when
|with transpose |using matmul in combination
| |with transpose
Known to fail| |8.2.0, 9.0
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I need an instrumented compiler to see the problem:
==61049==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x602000000550 at pc 0x0001085550a0 bp 0x7ffee7c84ae0 sp 0x7ffee7c84ad8
WRITE of size 4 at 0x602000000550 thread T0
#0 0x10855509f in matmul_r4_avx matmul_r4.c:381
#1 0x10857ba70 in _gfortran_matmul_r4 matmul_r4.c:2377
#2 0x107f7ad33 in testmatmul.3772 (a.out:x86_64+0x100000d33)
#3 0x107f7ade4 in MAIN__ (a.out:x86_64+0x100000de4)
#4 0x107f7ae4a in main (a.out:x86_64+0x100000e4a)
#5 0x7fff6de71014 in start (libdyld.dylib:x86_64+0x1014)
Address 0x602000000550 is a wild pointer.
SUMMARY: AddressSanitizer: heap-buffer-overflow matmul_r4.c:381 in
matmul_r4_avx
I see this behavior for m=15.
