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Subject: [Bug fortran/85130] Substrings out of range are not rejected
Date: Tue, 21 Sep 2021 19:18:18 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D85130

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Harald Anlauf
<anlauf@gcc.gnu.org>:

https://gcc.gnu.org/g:0fabf86a52c46db19026a956cf386da46fa4d0be

commit r9-9738-g0fabf86a52c46db19026a956cf386da46fa4d0be
Author: Harald Anlauf <anlauf@gmx.de>
Date:   Mon Sep 13 19:26:35 2021 +0200

    Fortran - fix handling of substring start and end indices

    gcc/fortran/ChangeLog:

            PR fortran/85130
            * expr.c (find_substring_ref): Handle given substring start and
            end indices as signed integers, not unsigned.

    gcc/testsuite/ChangeLog:

            PR fortran/85130
            * gfortran.dg/substr_6.f90: Revert commit r8-7574, adding again
            test that was erroneously considered as illegal.

    (cherry picked from commit 8d93ba93d3b13ac3d3c34404cad87732c809605b)=