https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80696
Bug ID: 80696
Summary: [8 Regression] New Failures to do with matmul
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: tkoenig at gcc dot gnu.org
Target Milestone: ---
There are some new failures with matmul with -m32, reported e.g. at
https://gcc.gnu.org/ml/fortran/2017-05/msg00027.html (testsuite
failures) and https://gcc.gnu.org/ml/fortran/2017-05/msg00026.html
(SPEC failure).
These failures are _really_ strange. One of the failing test
cases is generic_20.f90.
$ gfortran -O0 generic_20.f90
$ ./a.out
$ gfortran -m32 -O0 generic_20.f90
$ ./a.out
-559038737
0 2.000000
There isn't even a write statement in the patch, so this
points towards some kind of memory corruption, so it
is probably not the front end patch.
Investigating.
