re PR c++/10219 (ICE in maybe_adjust_types_for_deduction on invalid code)

cp:
	PR c++/10219
	* pt.c (type_unification_real): Don't unify exprs of error type.
	* tree.c (error_type): Don't die on error_type.
testsuite:
	PR c++/10219
	* g++.dg/template/error1.C: New.

From-SVN: r68825

gcc/cp/ChangeLog

 2003-07-02  Nathan Sidwell  <nathan@codesourcery.com>
 
+	PR c++/10219
+	* pt.c (type_unification_real): Don't unify exprs of error type.
+	* tree.c (error_type): Don't die on error_type.
+
 	PR c++/9779
 	* decl2.c (arg_assoc_class): Don't die on NULL type.
 	* typeck.c (type_unknown_p): Don't die on untyped expressions.

gcc/cp/pt.c

@@ -8830,6 +8830,8 @@ type_unification_real (tree tparms,
 	      continue;
 	    }
 	  arg = TREE_TYPE (arg);
+	  if (arg == error_mark_node)
+	    return 1;
 	}
       
       {

gcc/cp/tree.c

@@ -1747,8 +1747,11 @@ tree
 error_type (tree arg)
 {
   tree type = TREE_TYPE (arg);
+  
   if (TREE_CODE (type) == ARRAY_TYPE)
     ;
+  else if (TREE_CODE (type) == ERROR_MARK)
+    ;
   else if (real_lvalue_p (arg))
     type = build_reference_type (lvalue_type (arg));
   else if (IS_AGGR_TYPE (type))

gcc/testsuite/ChangeLog

 2003-07-02  Nathan Sidwell  <nathan@codesourcery.com>
 
+	PR c++/10219
+	* g++.dg/template/error1.C: New.
+	
 	PR c++/9779
 	* g++.dg/template/dependent-expr1.C: New.
 

gcc/testsuite/g++.dg/template/error1.C

+// { dg-do compile }
+
+// Copyright (C) 2003 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 30 Jun 2003 <nathan@codesourcery.com>
+
+// PR c++ 10219. ICE
+
+template <class T> void make_pair(T x);
+
+void foo(){
+  struct fps_chan_ID fps; // { dg-error "incomplete" "" }
+  make_pair(fps); // { dg-error "no matching function" "" }
+}