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Subject: [Bug symtab/26905] Inconsistent DW_AT_count evaluation
Date: Sun, 22 Nov 2020 09:55:03 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D26905

--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gn=
u.org> ---
The master branch has been updated by Tom de Vries <vries@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=3Dbinutils-gdb.git;h=3D117c628d4930=
9e3b6a8b11d492f497104f3e4b2c

commit 117c628d49309e3b6a8b11d492f497104f3e4b2c
Author: Gary Benson <gbenson@redhat.com>
Date:   Sun Nov 22 10:54:58 2020 +0100

    [gdb/testsuite] Add testcase for DW_AT_count referencing a variable

    Clang describes the upper bounds of variable length arrays using
    a DW_AT_count attribute which references the DIE of a synthetic
    variable whose value is specified using a DW_AT_location.  GDB handles
    these incorrectly if the corresponding DWARF expression finishes with a
    DW_OP_stack_value (PR26905).  This commit adds a new kfailed test to
    gdb.dwarf2/count.exp with the same DWARF as that generated by Clang for
    gdb.base/vla-optimized-out.exp, one of the failing tests.

    Checked on Fedora 32 x86_64, with GCC and Clang.

    gdb/testsuite/ChangeLog:

    2020-11-22  Gary Benson <gbenson@redhat.com>

            PR gdb/26905
            * gdb.dwarf2/count.exp: Add test for an array whose upper bound
            is defined using a DW_AT_count which references another DIE.

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