re PR c++/56895 (ICE: unexpected expression of kind arrow_expr)

	PR c++/56895
	* typeck.c (cp_build_binary_op): Call fold_non_dependent_expr_sfinae
	first before calling maybe_constant_value for warn_for_div_by_zero
	or invalid shift count warning purposes.

	* g++.dg/template/arrow3.C: New test.

From-SVN: r197660

gcc/cp/ChangeLog

+2013-04-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/56895
+	* typeck.c (cp_build_binary_op): Call fold_non_dependent_expr_sfinae
+	first before calling maybe_constant_value for warn_for_div_by_zero
+	or invalid shift count warning purposes.
+
 2013-04-09  Jason Merrill  <jason@redhat.com>
 
 	PR c++/25466

gcc/cp/typeck.c

@@ -4047,8 +4047,9 @@ cp_build_binary_op (location_t location,
 	      || code1 == COMPLEX_TYPE || code1 == VECTOR_TYPE))
 	{
 	  enum tree_code tcode0 = code0, tcode1 = code1;
+	  tree cop1 = fold_non_dependent_expr_sfinae (op1, tf_none);
 
-	  warn_for_div_by_zero (location, maybe_constant_value (op1));
+	  warn_for_div_by_zero (location, maybe_constant_value (cop1));
 
 	  if (tcode0 == COMPLEX_TYPE || tcode0 == VECTOR_TYPE)
 	    tcode0 = TREE_CODE (TREE_TYPE (TREE_TYPE (op0)));
@@ -4084,7 +4085,11 @@ cp_build_binary_op (location_t location,
 
     case TRUNC_MOD_EXPR:
     case FLOOR_MOD_EXPR:
-      warn_for_div_by_zero (location, maybe_constant_value (op1));
+      {
+	tree cop1 = fold_non_dependent_expr_sfinae (op1, tf_none);
+
+	warn_for_div_by_zero (location, maybe_constant_value (cop1));
+      }
 
       if (code0 == VECTOR_TYPE && code1 == VECTOR_TYPE
 	  && TREE_CODE (TREE_TYPE (type0)) == INTEGER_TYPE
@@ -4132,7 +4137,8 @@ cp_build_binary_op (location_t location,
 	}
       else if (code0 == INTEGER_TYPE && code1 == INTEGER_TYPE)
 	{
-	  tree const_op1 = maybe_constant_value (op1);
+	  tree const_op1 = fold_non_dependent_expr_sfinae (op1, tf_none);
+	  const_op1 = maybe_constant_value (const_op1);
 	  if (TREE_CODE (const_op1) != INTEGER_CST)
 	    const_op1 = op1;
 	  result_type = type0;
@@ -4178,7 +4184,8 @@ cp_build_binary_op (location_t location,
 	}
       else if (code0 == INTEGER_TYPE && code1 == INTEGER_TYPE)
 	{
-	  tree const_op1 = maybe_constant_value (op1);
+	  tree const_op1 = fold_non_dependent_expr_sfinae (op1, tf_none);
+	  const_op1 = maybe_constant_value (const_op1);
 	  if (TREE_CODE (const_op1) != INTEGER_CST)
 	    const_op1 = op1;
 	  result_type = type0;

gcc/testsuite/ChangeLog

+2013-04-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/56895
+	* g++.dg/template/arrow3.C: New test.
+
 2013-04-09  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* gcc.target/arm/minmax_minus.c: New test.

gcc/testsuite/g++.dg/template/arrow3.C

+// PR c++/56895
+// { dg-do compile }
+
+extern struct A { bool foo (); A bar (); } *a;
+
+template <int>
+int
+baz1 ()
+{
+  return 2 << (a->bar().foo() ? 1 : 0);
+}
+
+template <int>
+int
+baz2 ()
+{
+  return 2 >> (a->bar().foo() ? 1 : 0);
+}
+
+template <int>
+int
+baz3 ()
+{
+  return 10 / (a->bar().foo() ? 1 : 2);
+}
+
+template <int>
+int
+baz4 ()
+{
+  return 10 % (a->bar().foo() ? 1 : 0);
+}
+
+int
+test ()
+{
+  return baz1<0> () + baz2<0> () + baz3<0> () + baz4<0> ();
+}