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[Bug libfortran/85253] [8 Regression] asan detects heap-buffer-overflow in matmul_r4.c
- From: "dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 06 Apr 2018 11:54:09 +0000
- Subject: [Bug libfortran/85253] [8 Regression] asan detects heap-buffer-overflow in matmul_r4.c
- Auto-submitted: auto-generated
- References: <bug-85253-4@http.gcc.gnu.org/bugzilla/>
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
...