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[Bug binutils/27853] Infinite loop in dwarf.c:4387-4398


From: cvs-commit at gcc dot gnu.org
Subject: [Bug binutils/27853] Infinite loop in dwarf.c:4387-4398
Date: Wed, 12 May 2021 06:11:50 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=27853

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=55b26492bbd05637f24b9b70a507e842e466b723

commit 55b26492bbd05637f24b9b70a507e842e466b723
Author: Alan Modra <amodra@gmail.com>
Date:   Wed May 12 15:11:43 2021 +0930

    PR27853, Infinite loop in dwarf.c

    Not quite infinite but much longer than it need be.  The problem is
    triggered by read_and_display_attr_value incrementing "data" past
    "end".  read_and_display_attr_value shouldn't do that, but be
    defensive.

            PR 27853
            * dwarf.c (display_formatted_table): Test for data >= end rather
            than data == end.
            (process_extended_line_op): Likewise.
            (display_debug_lines_raw): Likewise.
            (display_debug_lines_decoded): Likewise.

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