re PR c++/22434 (ICE in simplify_{,gen_}subreg)

	PR c++/22434
	* call.c (build_conditional_expr): Do bad conversions, if there's
	no other choice.
	PR c++/22434
	* g++.dg/expr/cond8.C: New test.

From-SVN: r106418

gcc/cp/ChangeLog

 2005-11-02  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/22434
+	* call.c (build_conditional_expr): Do bad conversions, if there's
+	no other choice.
+
 	PR c++/24560
 	* parser.c (cp_parser_postfix_dot_deref_expression): Improve error
 	message for use of overloaded functions on LHS of "." operator.

gcc/cp/call.c

@@ -3281,13 +3281,13 @@ build_conditional_expr (tree arg1, tree arg2, tree arg3)
 	  error ("operands to ?: have different types");
 	  result = error_mark_node;
 	}
-      else if (conv2 && !conv2->bad_p)
+      else if (conv2 && (!conv2->bad_p || !conv3))
 	{
 	  arg2 = convert_like (conv2, arg2);
 	  arg2 = convert_from_reference (arg2);
 	  arg2_type = TREE_TYPE (arg2);
 	}
-      else if (conv3 && !conv3->bad_p)
+      else if (conv3 && (!conv3->bad_p || !conv2))
 	{
 	  arg3 = convert_like (conv3, arg3);
 	  arg3 = convert_from_reference (arg3);

gcc/testsuite/ChangeLog

 2005-11-02  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/22434
+	* g++.dg/expr/cond8.C: New test.
+
 	PR c++/24560
 	* g++.dg/parse/dot1.C: New test.
 

gcc/testsuite/g++.dg/expr/cond8.C

+// PR c++/22434
+// { dg-options "" }
+
+struct A
+{
+  A(void*);
+  ~A();
+};
+
+void foo(const int i, bool b)
+{
+  b ? A(0) : i; // { dg-error "conversion|initializing" } 
+}