* dwarf2read.c (partial_die_parent_scope): Work around buggy

	GCC 4.1 debug info generation (GCC PR c++/28460).
	(determine_prefix): Likewise.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 6507b66274ff4f1b95d61c81f4a24eddf35b0b50..c081aa6d1ffc0c2f325bdd416c5e5ff53618c85c 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2010-03-22  Ulrich Weigand  <uweigand@de.ibm.com>
+
+       * dwarf2read.c (partial_die_parent_scope): Work around buggy
+       GCC 4.1 debug info generation (GCC PR c++/28460).
+       (determine_prefix): Likewise.
+
 2010-03-20  Daniel Jacobowitz  <dan@codesourcery.com>
 
        * tui/tui-disasm.c (tui_get_begin_asm_address): Default to

diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 92cda0e600023fdcb729980cf5233441f6c38fff..ed7923e995ca287dddffae5ab4fa331ab884984b 100644 (file)
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -2307,6 +2307,19 @@ partial_die_parent_scope (struct partial_die_info *pdi,
 
   grandparent_scope = partial_die_parent_scope (parent, cu);
 
+  /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus
+     DW_TAG_namespace DIEs with a name of "::" for the global namespace.
+     Work around this problem here.  */
+  if (cu->language == language_cplus
+      && parent->tag == DW_TAG_namespace 
+      && strcmp (parent->name, "::") == 0
+      && grandparent_scope == NULL)
+    {
+      parent->scope = NULL;
+      parent->scope_set = 1;
+      return NULL;
+    }
+
   if (parent->tag == DW_TAG_namespace
       || parent->tag == DW_TAG_structure_type
       || parent->tag == DW_TAG_class_type
@@ -9029,6 +9042,12 @@ determine_prefix (struct die_info *die, struct dwarf2_cu *cu)
       {
       case DW_TAG_namespace:
        parent_type = read_type_die (parent, cu);
+       /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus
+          DW_TAG_namespace DIEs with a name of "::" for the global namespace.
+          Work around this problem here.  */
+       if (cu->language == language_cplus
+           && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0)
+         return "";
        /* We give a name to even anonymous namespaces.  */
        return TYPE_TAG_NAME (parent_type);
       case DW_TAG_class_type: