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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/25700] Forward-imported CU causes duplicate partial symtab
Date: Tue, 24 Mar 2020 13:01:48 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D25700

--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
Tentative patch:
...
diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 0e879e08a0..97f7c8f003 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -7808,7 +7808,12 @@ dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile
*dwarf2_per_objfile)
                           addrmap_create_mutable (&temp_obstack));

   for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units)
-    process_psymtab_comp_unit (per_cu, false, language_minimal);
+    {
+      if (per_cu->v.psymtab !=3D NULL)
+       /* In case a forward DW_TAG_imported_unit has read the CU already. =
 */
+       continue;
+      process_psymtab_comp_unit (per_cu, false, language_minimal);
+    }

   /* This has to wait until we read the CUs, we need the list of DWOs.  */
   process_skeletonless_type_units (dwarf2_per_objfile);
...

--=20
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