[Ada] Fix for possibly null ranges in 'Update and delta_aggregate

gcc/ada/

	* exp_spark.adb (Expand_SPARK_Delta_Or_Update): Apply scalar
	range checks against the base type of an index type, not against
	the index type itself.

diff --git a/gcc/ada/exp_spark.adb b/gcc/ada/exp_spark.adb
index 40621bd..6454902 100644 (file)
--- a/gcc/ada/exp_spark.adb
+++ b/gcc/ada/exp_spark.adb
@@ -227,9 +227,9 @@ package body Exp_SPARK is
 
                   if Nkind (Index) = N_Range then
                      Apply_Scalar_Range_Check
-                       (Low_Bound  (Index), Etype (Index_Typ));
+                       (Low_Bound  (Index), Base_Type (Etype (Index_Typ)));
                      Apply_Scalar_Range_Check
-                       (High_Bound (Index), Etype (Index_Typ));
+                       (High_Bound (Index), Base_Type (Etype (Index_Typ)));
 
                   --  Otherwise the index denotes a single element