https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97063
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-8 branch has been updated by Harald Anlauf <anl...@gcc.gnu.org>: https://gcc.gnu.org/g:98931867e61552f76af90eb5337a28ccedbd604b commit r8-10596-g98931867e61552f76af90eb5337a28ccedbd604b Author: Harald Anlauf <anl...@gmx.de> Date: Sun Oct 18 20:15:26 2020 +0200 PR libfortran/97063 - Wrong result for vector (step size is negative) * matrix The MATMUL intrinsic provided a wrong result for rank-1 times rank-2 array when a negative stride was used for addressing the elements of the rank-1 array, because a check on strides was erroneously placed before the check on the rank. Interchange order of checks. libgfortran/ChangeLog: * m4/matmul_internal.m4: Move check for rank-1 times rank-2 before checks on strides for rank-2 times rank-2. * generated/matmul_c10.c: Regenerated. * generated/matmul_c16.c: Likewise. * generated/matmul_c4.c: Likewise. * generated/matmul_c8.c: Likewise. * generated/matmul_i1.c: Likewise. * generated/matmul_i16.c: Likewise. * generated/matmul_i2.c: Likewise. * generated/matmul_i4.c: Likewise. * generated/matmul_i8.c: Likewise. * generated/matmul_r10.c: Likewise. * generated/matmul_r16.c: Likewise. * generated/matmul_r4.c: Likewise. * generated/matmul_r8.c: Likewise. * generated/matmulavx128_c10.c: Likewise. * generated/matmulavx128_c16.c: Likewise. * generated/matmulavx128_c4.c: Likewise. * generated/matmulavx128_c8.c: Likewise. * generated/matmulavx128_i1.c: Likewise. * generated/matmulavx128_i16.c: Likewise. * generated/matmulavx128_i2.c: Likewise. * generated/matmulavx128_i4.c: Likewise. * generated/matmulavx128_i8.c: Likewise. * generated/matmulavx128_r10.c: Likewise. * generated/matmulavx128_r16.c: Likewise. * generated/matmulavx128_r4.c: Likewise. * generated/matmulavx128_r8.c: Likewise. gcc/testsuite/ChangeLog: * gfortran.dg/matmul_20.f90: New test. (cherry picked from commit cd6cd6aed195b4ec7d652e8b41d60b60e174304e)
