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To: gdb-prs@sourceware.org
Subject: [Bug symtab/28159] [gdb/symtab] gdb generates .gdb_index with only
 empty hashtable entries, then fails to recognize it as empty
Date: Fri, 06 Aug 2021 19:52:45 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28159

--- Comment #1 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=3Dcc6b3d766d66=
94d4c4ee14b75f6529365a443a98

commit cc6b3d766d6694d4c4ee14b75f6529365a443a98
Author: Tom de Vries <tdevries@suse.de>
Date:   Fri Aug 6 21:52:41 2021 +0200

    [gdb/symtab] Recognize .gdb_index symbol table with empty entries as em=
pty

    When reading a .gdb_index that contains a non-empty symbol table with o=
nly
    empty entries, gdb doesn't recognize it as empty.

    Fix this by recognizing that the constant pool is empty, and then setti=
ng
the
    symbol table to empty.

    Tested on x86_64-linux.

    gdb/ChangeLog:

    2021-08-01  Tom de Vries  <tdevries@suse.de>

            PR symtab/28159
            * dwarf2/read.c (read_gdb_index_from_buffer): Handle symbol tab=
le
            filled with empty entries.

    gdb/testsuite/ChangeLog:

    2021-08-01  Tom de Vries  <tdevries@suse.de>

            PR symtab/28159
            * gdb.dwarf2/dw2-zero-range.exp: Remove kfail.

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