decl.c (pushtag): Don't put out debugging information for compiler-generated typedefs.

	* decl.c (pushtag): Don't put out debugging information for
	compiler-generated typedefs.

From-SVN: r21285

gcc/cp/ChangeLog

 1998-07-19  Mark Mitchell  <mark@markmitchell.com>
 
+	* decl.c (pushtag): Don't put out debugging information for
+	compiler-generated typedefs.
+	
 	* error.c (dump_type_real): Don't crash when presented with
 	intQI_type_node or the like.
 

gcc/cp/decl.c

@@ -2287,6 +2287,14 @@ pushtag (name, type, globalize)
 	      if (current_lang_name == lang_name_java)
 		TYPE_FOR_JAVA (type) = 1;
 	      SET_DECL_ARTIFICIAL (d);
+	      /* There's no reason to put out debugging information
+		 for these declarations since they are
+		 compiler-generated.  Furthermore, if the type makes
+		 use of template parameters, the code that generates
+		 debugging information will get confused.  It is safe
+		 to put these out in the non-template case, just
+		 useless.  */
+	      DECL_IGNORED_P (d) = 1;
 	      if (! in_class)
 		set_identifier_type_value_with_scope (name, type, b);
 	    }

gcc/testsuite/g++.old-deja/g++.pt/crash12.C

+// Build don't link:
+// Special g++ Options: -g
+
+template <class C>
+class CenteringTag {
+};
+
+struct S {
+  template <class B, class C>
+  static void f() {
+    CenteringTag<C> ctag;
+  }
+};