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[Bug fortran/83540] [8 Regression] Invalid code with MATMUL, -fno-realloc-lhs -ffrontend-optimize
- From: "anlauf at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 23 Dec 2017 20:02:38 +0000
- Subject: [Bug fortran/83540] [8 Regression] Invalid code with MATMUL, -fno-realloc-lhs -ffrontend-optimize
- Auto-submitted: auto-generated
- References: <bug-83540-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83540
--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Dominique d'Humieres from comment #3)
> The code uses ALLOCATE without any realloc-lhs!-(
The problem shows up for any use of MATMUL as argument
to a procedure, whether user-defined or intrinsic.
Maybe the problem is just related to the needed temporary.
The problem also shows up with optimization for "-std=f95".
F95 did not have realloc-lhs, and the code is F95-compatible.