ada: Fix small thinko in previous change to two-pass aggregate expansion

We need a type tailored to the base index type to compute the length.

gcc/ada/ChangeLog:

	* exp_aggr.adb (Two_Pass_Aggregate_Expansion): Use the base type of
	the index type to find the type used to compute the length.

diff --git a/gcc/ada/exp_aggr.adb b/gcc/ada/exp_aggr.adb
index fb5cfc6d1f08fed0e1c2ec294181a85644065783..f771660d23a0d21c4a6073af13baa9b30a79e7e0 100644 (file)
--- a/gcc/ada/exp_aggr.adb
+++ b/gcc/ada/exp_aggr.adb
@@ -5601,10 +5601,11 @@ package body Exp_Aggr is
          Comp_Type  : constant Entity_Id := Etype (N);
          Index_Id   : constant Entity_Id := Make_Temporary (Loc, 'I', N);
          Index_Type : constant Entity_Id := Etype (First_Index (Etype (N)));
+         Index_Base : constant Entity_Id := Base_Type (Index_Type);
          Size_Id    : constant Entity_Id := Make_Temporary (Loc, 'I', N);
          Size_Type  : constant Entity_Id :=
                         Integer_Type_For
-                          (Esize (Index_Type), Is_Unsigned_Type (Index_Type));
+                          (Esize (Index_Base), Is_Unsigned_Type (Index_Base));
          TmpE       : constant Entity_Id := Make_Temporary (Loc, 'A', N);
 
          Assoc    : Node_Id := First (Component_Associations (N));