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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/30520] Slow lookup_symbol_in_objfile
Date: Fri, 17 May 2024 14:49:45 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D30520

--- Comment #14 from Sourceware Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=3Dbinutils-gdb.git;h=3D3a0fae312983=
989a33608d924ff902d7b78e8ec1

commit 3a0fae312983989a33608d924ff902d7b78e8ec1
Author: Dmitry.Neverov <dmitry.neverov@jetbrains.com>
Date:   Mon May 6 17:09:17 2024 +0200

    gdb/symtab: check name matches before expanding a CU

    The added check fixes the case when an unqualified lookup
    name without template arguments causes expansion of many CUs
    which contain the name with template arguments.

    This is similar to what dw2_expand_symtabs_matching_symbol does
    before expanding the CU.

    In the referenced issue the lookup name was wxObjectDataPtr and many
    CUs had names like wxObjectDataPtr<wxBitmapBundleImpl>. This caused
    their expansion and the lookup took around a minute. The added check
    helps to avoid the expansion and makes the symbol lookup to return in
    a second or so.

    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=3D30520

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