re PR libstdc++/20647 (Wrong typeid for incomplete types)

cp/
	PR c++/20647
	* rtti.c (tinfo_base_init): The type info string is always global.
testsuite/
	PR c++/20647
	* g++.dg/abi/rtti3.C: New.

From-SVN: r117957

gcc/cp/ChangeLog

+2006-10-22  Nathan Sidwell  <nathan@codesourcery.com>
+
+	PR c++/20647
+	* rtti.c (tinfo_base_init): The type info string is always global.
+
 2006-10-20  Lee Millward  <lee.millward@codesourcery.com>
             Mark Mitchell <mark@codesourcery.com>
 

gcc/cp/rtti.c

@@ -824,13 +824,7 @@ tinfo_base_init (tinfo_s *ti, tree target)
     TREE_STATIC (name_decl) = 1;
     DECL_EXTERNAL (name_decl) = 0;
     DECL_TINFO_P (name_decl) = 1;
-    if (involves_incomplete_p (target))
-      {
-	TREE_PUBLIC (name_decl) = 0;
-	DECL_INTERFACE_KNOWN (name_decl) = 1;
-      }
-    else
-      set_linkage_according_to_type (target, name_decl);
+    set_linkage_according_to_type (target, name_decl);
     import_export_decl (name_decl);
     DECL_INITIAL (name_decl) = name_string;
     mark_used (name_decl);

gcc/testsuite/ChangeLog

+2006-10-22  Nathan Sidwell  <nathan@codesourcery.com>
+
+	PR c++/20647
+	* g++.dg/abi/rtti3.C: New.
+
 2006-10-21  Uros Bizjak  <uros@kss-loka.si>
 
 	PR middle-end/28252

gcc/testsuite/g++.dg/abi/rtti3.C

+// PR 20647, we must emit the typeinfo's string as weak, but not the
+// necessarily the type info object
+
+// { dg-require-weak "" }
+// { dg-final { scan-assembler ".weak\[ \t\]_?_ZTSPP1A" } }
+// { dg-final { scan-assembler-not ".weak\[ \t\]_?_ZTIPP1A" } }
+
+struct A;
+
+void Foo ()
+{
+  throw (A **)0;
+}