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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/30661] [gdb/symtab] main symbol language lookup causes
 symtab expansion
Date: Sat, 05 Aug 2023 15:57:29 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D30661

--- Comment #7 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=3Dd06730bc0205=
f7c35bfccf057ef0ef83a12206d6

commit d06730bc0205f7c35bfccf057ef0ef83a12206d6
Author: Tom de Vries <tdevries@suse.de>
Date:   Sat Aug 5 17:57:13 2023 +0200

    [gdb/symtab] Find main language without symtab expansion

    When loading an executable using "file a.out", the language is set
according
    to a.out, which can involve looking up the language of symbol "main", w=
hich
    will cause the symtab expansion for the containing CU.

    Expansion of lto debug info can be slow, so in commit d3214198119 ("[gd=
b]
Use
    partial symbol table to find language for main") a feature was added to
avoid
    the symtab expansion.

    This feature stopped working after commit 7f4307436fd ("Fix "start" for=
 D,
    Rust, etc").

    [ The commit addresses problems related to command start, which requires
finding
    the main function:
    - for language D, "main" was found instead of "D main", and
    - for Rust, the correct function was found, but attributed the wrong na=
me
      (not fully qualified). ]

    Reimplement the feature by adding
    cooked_index_functions::lookup_global_symbol_language.

    Tested on x86_64-linux.

    PR symtab/30661
    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=3D30661

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