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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/17976] ptype (anonymous namespace) doesn't work
Date: Sun, 22 Feb 2015 06:01:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=17976

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Doug Evans <devans@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=96553a0cffb30d2ac6068eb71bed38ea7432073b

commit 96553a0cffb30d2ac6068eb71bed38ea7432073b
Author: Doug Evans <dje@google.com>
Date:   Sat Feb 21 21:58:31 2015 -0800

    PR c++/17976, symtab/17821

    This patch addresses two issues.

    The basic problem is that "(anonymous namespace)" doesn't get entered
    into the symbol table because when dwarf2read.c:new_symbol_full is called
    the DIE has no name (dwarf2_name returns NULL).

    PR 17976: ptype '(anonymous namespace)' should work like any namespace

    PR 17821: perf issue looking up (anonymous namespace)

    bash$ gdb monster-program
    (gdb) mt set per on
    (gdb) mt set symbol-cache-size 0
    (gdb) break (anonymous namespace)::foo

    Before:

    Command execution time: 3.266289 (cpu), 6.169030 (wall)
    Space used: 811429888 (+12910592 for this command)

    After:

    Command execution time: 1.264076 (cpu), 4.057408 (wall)
    Space used: 798781440 (+0 for this command)

    gdb/ChangeLog:

        PR c++/17976, symtab/17821
        * cp-namespace.c (cp_search_static_and_baseclasses): New parameter
        is_in_anonymous.  All callers updated.
        (find_symbol_in_baseclass): Ditto.
        (cp_lookup_nested_symbol_1): Ditto.  Don't search all static blocks
        for symbols in an anonymous namespace.
        * dwarf2read.c (namespace_name): Don't call dwarf2_name, fetch
        DW_AT_name directly.
        (dwarf2_name): Convert missing namespace name to
        CP_ANONYMOUS_NAMESPACE_STR.

    gdeb/testsuite/ChangeLog:

        * gdb.cp/anon-ns.exp: Add test for ptype '(anonymous namespace)'.

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