re PR c++/59097 (ICE with invalid statement expression as array size)

	PR c++/59097
	* decl.c (compute_array_index_type): Don't call
	maybe_constant_value for a non-integral expression.

From-SVN: r207161

gcc/cp/ChangeLog

+2014-01-27  Jason Merrill  <jason@redhat.com>
+
+	PR c++/59097
+	* decl.c (compute_array_index_type): Don't call
+	maybe_constant_value for a non-integral expression.
+
 2014-01-24  Balaji V. Iyer  <balaji.v.iyer@intel.com>
 
 	* call.c (magic_varargs_p): Replaced flag_enable_cilkplus with

gcc/cp/decl.c

@@ -8262,7 +8262,9 @@ compute_array_index_type (tree name, tree size, tsubst_flags_t complain)
 	      abi_1_itype = error_mark_node;
 	    }
 
-	  size = maybe_constant_value (size);
+	  if (INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P (type))
+	    size = maybe_constant_value (size);
+
 	  if (!TREE_CONSTANT (size))
 	    size = osize;
 	}

gcc/testsuite/g++.dg/ext/stmtexpr15.C

+// PR c++/59097
+// { dg-options "" }
+
+void foo()
+{
+  int x[({ return; })];		// { dg-error "non-integral" }
+}