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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/30799] [gdb/symtab] hang in inherit_abstract_dies
Date: Mon, 28 Aug 2023 14:27:39 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D30799

--- Comment #3 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=3D8d83f51b9107=
2bc3d79061eba7e564ba9be6afd7

commit 8d83f51b91072bc3d79061eba7e564ba9be6afd7
Author: Tom de Vries <tdevries@suse.de>
Date:   Mon Aug 28 16:27:58 2023 +0200

    [gdb/symtab] Handle self-reference in inherit_abstract_dies

    Building gdb with gcc 7.5.0 and -flto -O2 -flto-partition=3Done generat=
es a
    self-referencing DIE:
    ...
     <2><91dace>: Abbrev Number: 405 (DW_TAG_label)
        <91dad0>   DW_AT_abstract_origin: <0x91dace>
    ...

    When encountering the self-reference DIE in inherit_abstract_dies we lo=
op
    following the abstract origin, effectively hanging gdb.

    Fix this by handling self-referencing DIEs in the loop in
    inherit_abstract_dies.

    Tested on x86_64-linux.

    Approved-By: Tom Tromey <tom@tromey.com>

    PR symtab/30799
    https://sourceware.org/bugzilla/show_bug.cgi?id=3D30799

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