PR debug/42278

[pf3gnuchains/gcc-fork.git] / gcc / dwarf2out.c

diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 66ac5eb..467bb26 100644 (file)
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -12073,10 +12073,6 @@ base_type_die (tree type)
 
   base_type_result = new_die (DW_TAG_base_type, comp_unit_die, type);
 
-  /* This probably indicates a bug.  */
-  if (! TYPE_NAME (type))
-    add_name_attribute (base_type_result, "__unknown__");
-
   add_AT_unsigned (base_type_result, DW_AT_byte_size,
                   int_size_in_bytes (type));
   add_AT_unsigned (base_type_result, DW_AT_encoding, encoding);
@@ -12195,6 +12191,21 @@ modified_type_die (tree type, int is_const_type, int is_volatile_type,
                          ((is_const_type ? TYPE_QUAL_CONST : 0)
                           | (is_volatile_type ? TYPE_QUAL_VOLATILE : 0)));
 
+  if (qualified_type == sizetype
+      && TYPE_NAME (qualified_type)
+      && TREE_CODE (TYPE_NAME (qualified_type)) == TYPE_DECL)
+    {
+#ifdef ENABLE_CHECKING
+      gcc_assert (TREE_CODE (TREE_TYPE (TYPE_NAME (qualified_type)))
+                 == INTEGER_TYPE
+                 && TYPE_PRECISION (TREE_TYPE (TYPE_NAME (qualified_type)))
+                    == TYPE_PRECISION (qualified_type)
+                 && TYPE_UNSIGNED (TREE_TYPE (TYPE_NAME (qualified_type)))
+                    == TYPE_UNSIGNED (qualified_type));
+#endif
+      qualified_type = TREE_TYPE (TYPE_NAME (qualified_type));
+    }
+
   /* If we do, then we can just use its DIE, if it exists.  */
   if (qualified_type)
     {
@@ -12311,6 +12322,9 @@ modified_type_die (tree type, int is_const_type, int is_volatile_type,
        name = DECL_NAME (name);
       add_name_attribute (mod_type_die, IDENTIFIER_POINTER (name));
     }
+  /* This probably indicates a bug.  */
+  else if (mod_type_die->die_tag == DW_TAG_base_type)
+    add_name_attribute (mod_type_die, "__unknown__");
 
   if (qualified_type)
     equate_type_number_to_die (qualified_type, mod_type_die);
@@ -19816,10 +19830,7 @@ dwarf2out_imported_module_or_decl_1 (tree decl,
 
   if (TREE_CODE (decl) == TYPE_DECL || TREE_CODE (decl) == CONST_DECL)
     {
-      if (is_base_type (TREE_TYPE (decl)))
-       at_import_die = base_type_die (TREE_TYPE (decl));
-      else
-       at_import_die = force_type_die (TREE_TYPE (decl));
+      at_import_die = force_type_die (TREE_TYPE (decl));
       /* For namespace N { typedef void T; } using N::T; base_type_die
         returns NULL, but DW_TAG_imported_declaration requires
         the DW_AT_import tag.  Force creation of DW_TAG_typedef.  */