re PR c/57474 (FAIL: c-c++-common/cilk-plus/AN/sec_implicit2?.c -fcilkplus…

re PR c/57474 (FAIL: c-c++-common/cilk-plus/AN/sec_implicit2?.c  -fcilkplus (internal compiler error) on x86_64-apple-darwin10)

2013-06-03  Balaji V. Iyer  <balaji.v.iyer@intel.com>

       PR c/57474
       * c-array-notation.c (build_array_notation_expr): Initialized rhs_length
       array to NULL_TREE if they are unused.  Also added a check for the
       field to be NULL before its fields are used in future.

From-SVN: r199627

gcc/c/ChangeLog

+2013-06-03  Balaji V. Iyer  <balaji.v.iyer@intel.com>
+
+	PR c/57474
+	* c-array-notation.c (build_array_notation_expr): Initialized rhs_length
+	array to NULL_TREE if they are unused.  Also added a check for the
+	field to be NULL before its fields are used in future.
+	
 2013-05-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	PR bootstrap/57450

gcc/c/c-array-notation.c

@@ -1541,7 +1541,10 @@ build_array_notation_expr (location_t location, tree lhs, tree lhs_origtype,
 	}
       else
 	for (jj = 0; jj < rhs_rank; jj++)
-	  rhs_vector[ii][jj] = false;
+	  { 
+	    rhs_vector[ii][jj] = false;
+	    rhs_length[ii][jj] = NULL_TREE;
+	  }
     }
 
   if (length_mismatch_in_expr_p (EXPR_LOCATION (lhs), lhs_length,
@@ -1555,6 +1558,7 @@ build_array_notation_expr (location_t location, tree lhs, tree lhs_origtype,
 
   if (lhs_list_size > 0 && rhs_list_size > 0 && lhs_rank > 0 && rhs_rank > 0
       && TREE_CODE (lhs_length[0][0]) == INTEGER_CST
+      && rhs_length[0][0]
       && TREE_CODE (rhs_length[0][0]) == INTEGER_CST)
     {
       HOST_WIDE_INT l_length = int_cst_value (lhs_length[0][0]);