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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/27678] New: [gdb/symtab] Use debuginfod sourcelist api
 to test for file existence
Date: Thu, 01 Apr 2021 06:06:16 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27678

            Bug ID: 27678
           Summary: [gdb/symtab] Use debuginfod sourcelist api to test for
                    file existence
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: symtab
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

Spinoff of PR27667.

In PR27673, a new debuginfod webapi to is proposed to enumerate source file=
s: a
"/buildid/HEXCODE/sourcelist" query.

Once that's there, the client api could be extended to support an
debuginfod_source_exists_query.

This could then be used in gdb.

Currently in gdb, in some cases (symtab_to_fullname) we just want to know
whether the file exists, and in order to verify this we open the file using
debuginfod_source_query, test the resulting file descriptor for success and
then close it.  This means sending over the content of the file, but not
immediately using it.  Using debuginfod_source_exists_query would be cheape=
r.

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