re PR c++/7939 (ICE on function template specialization)

	PR c++/7939
	* typeck.c (comptypes): Don't ICE when its first argument is
	error_mark_node.
	(compparms): Reverse the arguments of same_type_p.

	* g++.dg/template/crash11.C: New test.

From-SVN: r71432

gcc/cp/ChangeLog

+2003-09-16  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
+
+	PR c++/7939
+	* typeck.c (comptypes): Don't ICE when its first argument is
+	error_mark_node.
+	(compparms): Reverse the arguments of same_type_p.
+
 2003-09-15  Nathan Sidwell  <nathan@codesourcery.com>
 
 	PR c++/12184

gcc/cp/typeck.c

@@ -900,11 +900,8 @@ comptypes (tree t1, tree t2, int strict)
   if (t1 == t2)
     return true;
 
-  /* This should never happen.  */
-  my_friendly_assert (t1 != error_mark_node, 307);
-
   /* Suppress errors caused by previously reported errors */
-  if (t2 == error_mark_node)
+  if (t1 == error_mark_node || t2 == error_mark_node)
     return false;
   
   my_friendly_assert (TYPE_P (t1) && TYPE_P (t2), 20030623);
@@ -1170,7 +1167,7 @@ compparms (tree parms1, tree parms2)
 	 they fail to match.  */
       if (!t1 || !t2)
 	return false;
-      if (!same_type_p (TREE_VALUE (t2), TREE_VALUE (t1)))
+      if (!same_type_p (TREE_VALUE (t1), TREE_VALUE (t2)))
 	return false;
     }
   return true;

gcc/testsuite/ChangeLog

+2003-09-16  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
+
+	PR c++/7939
+	* g++.dg/template/crash11.C: New test.
+
 2003-09-16  Jason Merrill  <jason@redhat.com>
 	    Jakub Jelinek  <jakub@redhat.com>
 

gcc/testsuite/g++.dg/template/crash11.C

+// { dg-do compile }
+
+// Origin: kparz@iastate.edu
+
+// PR c++/7939: ICE for invalid function parameter after template
+// substitution.
+
+template <class T, class U> void foo(T, U) {}
+template <class T> void foo<T,void>(T, void) {} // { dg-error "incomplete|invalid|partial" }