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Subject: Re: [PATCH] PR fortran/99840 - [8/9/10/11 Regression] ICE in
 gfc_simplify_matmul, at fortran/simplify.c:4777
To: Harald Anlauf <anlauf@gmx.de>, fortran <fortran@gcc.gnu.org>,
 gcc-patches <gcc-patches@gcc.gnu.org>
References: <trinity-359a6837-d01d-45cb-9ae7-448516cf26c6-1617224939660@3c-app-gmx-bap04>
From: Jerry DeLisle <jvdelisle@charter.net>
Message-ID: <9fa9af56-f214-26d7-9b4e-b3759f2a4ee6@charter.net>
Date: Wed, 31 Mar 2021 17:28:55 -0700
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Yes OK for trunk and affected branches.

Thanks,

Jerry

On 3/31/21 2:08 PM, Harald Anlauf via Fortran wrote:
> Dear all,
>
> the simplification of the TRANSPOSE of a zero-sized array would lead to
> an ICE if the result was used in a subsequent simplification of a MATMUL.
> The reason was the lack of the proper initialization of the shape, which
> is mpz_t.  Use mpz_init_set instead of mpz_set.
>
> Regtested on x86_64-pc-linux-gnu.  OK for mainline?
>
> Since this is a regression, backport to all affected branches?
>
> Thanks,
> Harald
>
>
> PR fortran/99840 - ICE in gfc_simplify_matmul, at fortran/simplify.c:4777
>
> The simplification of the transposition of a constant array shall properly
> initialize and set the shape of the result.
>
> gcc/fortran/ChangeLog:
>
> 	PR fortran/99840
> 	* simplify.c (gfc_simplify_transpose): Properly initialize
> 	resulting shape.
>
> gcc/testsuite/ChangeLog:
>
> 	PR fortran/99840
> 	* gfortran.dg/transpose_5.f90: New test.
>