re PR c++/58614 ([c++11] ICE with undeclared variable in initializer list)

/cp
2015-01-16  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/58614
	* pt.c (unify): When BRACE_ENCLOSED_INITIALIZER_P (arg), handle
	TREE_TYPE (elt) == error_mark_node.

/testsuite
2015-01-16  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/58614
	* g++.dg/cpp0x/auto44.C: New.

From-SVN: r219716

gcc/cp/ChangeLog

+2015-01-16  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/58614
+	* pt.c (unify): When BRACE_ENCLOSED_INITIALIZER_P (arg), handle
+	TREE_TYPE (elt) == error_mark_node.
+
 2015-01-15  Jan Hubicka  <hubicka@ucw.cz>
 
 	PR tree-optimization/62053

gcc/cp/pt.c

@@ -17875,6 +17875,8 @@ unify (tree tparms, tree targs, tree parm, tree arg, int strict,
 	  if (!BRACE_ENCLOSED_INITIALIZER_P (elt))
 	    {
 	      tree type = TREE_TYPE (elt);
+	      if (type == error_mark_node)
+		return unify_invalid (explain_p);
 	      /* It should only be possible to get here for a call.  */
 	      gcc_assert (elt_strict & UNIFY_ALLOW_OUTER_LEVEL);
 	      elt_strict |= maybe_adjust_types_for_deduction

gcc/testsuite/ChangeLog

+2015-01-16  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/58614
+	* g++.dg/cpp0x/auto44.C: New.
+
 2015-01-15  Sandra Loosemore  <sandra@codesourcery.com>
 
 	PR target/59710

gcc/testsuite/g++.dg/cpp0x/auto44.C

+// PR c++/58614
+// { dg-do compile { target c++11 } }
+
+#include <initializer_list>
+
+void foo()
+{
+  i;  // { dg-error "not declared" }
+  auto j = { i };  // { dg-error "unable to deduce" }
+}