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[Patch, fortran] PR82934 - [6/7/8 Regression] Segfault on assumed character length in allocate

From: Paul Richard Thomas <paul dot richard dot thomas at gmail dot com>
To: "fortran at gcc dot gnu dot org" <fortran at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Fri, 10 Nov 2017 13:33:20 +0000
Subject: [Patch, fortran] PR82934 - [6/7/8 Regression] Segfault on assumed character length in allocate
Authentication-results: sourceware.org; auth=none

Committed as obvious in r254624.

I will apply to 6- and 7-branches over the weekend. Although not a
regression, the fix prevents an ICE in a particularly robust way.

Cheers

Paul

2017-11-10  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/82934
    * trans-stmt.c (gfc_trans_allocate): Remove the gcc_assert on
    null string length for assumed length typespec and set
    expr3_esize to NULL_TREE;

2017-11-10  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/82934
    * gfortran.dg/allocate_assumed_charlen_1.f90: New test.

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