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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/29286] SUMMARY: ThreadSanitizer: data race
 gdb/dwarf2/read.c:4100 in dw_expand_symtabs_matching_file_matcher
Date: Sat, 25 Jun 2022 16:03:06 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29286

--- Comment #7 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 14171
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D14171&action=3Ded=
it
gdb.log

While testing, found another one.

Replicating the same fix works for the test-case:
...
diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 6e581a6a8ea..f1a5b71b66e 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -4280,6 +4280,11 @@
dwarf2_base_index_functions::find_pc_sect_compunit_symtab
     warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"=
),
             paddress (objfile->arch (), pc));

+  cooked_index_vector *table
+    =3D (static_cast<cooked_index_vector *>
+       (per_objfile->per_bfd->index_table.get ()));
+  table->wait ();
+
   result =3D recursively_find_pc_sect_compunit_symtab
     (dw2_instantiate_symtab (data, per_objfile, false), pc);

...

--=20
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