[Ada] Handle iterator filters on loop specifications over containers

gcc/ada/

	* sem_ch5.adb (Analyze_Iterator_Specification): If iterator
	filter is present, preanalyze filter without expansion.
	(Analyze_Loop_Parameter_Specification): When
	loop_Parameter_Specification is rewritten as
	Iterator_Specification, transfer Iterator_Filter if present.

1 files changed, 7 insertions, 1 deletions

diff --git a/gcc/ada/sem_ch5.adb b/gcc/ada/sem_ch5.adb
index b136356..653e315 100644
--- a/gcc/ada/sem_ch5.adb
+++ b/gcc/ada/sem_ch5.adb
@@ -2620,7 +2620,10 @@ package body Sem_Ch5 is
       end if;
 
       if Present (Iterator_Filter (N)) then
-         Analyze_And_Resolve (Iterator_Filter (N), Standard_Boolean);
+         --  Preanalyze the filter. Expansion will take place when enclosing
+         --  loop is expanded.
+
+         Preanalyze_And_Resolve (Iterator_Filter (N), Standard_Boolean);
       end if;
    end Analyze_Iterator_Specification;
 
@@ -3017,6 +3020,9 @@ package body Sem_Ch5 is
             begin
                Set_Iterator_Specification (Scheme, I_Spec);
                Set_Loop_Parameter_Specification (Scheme, Empty);
+               Set_Iterator_Filter (I_Spec,
+                 Relocate_Node (Iterator_Filter (N)));
+
                Analyze_Iterator_Specification (I_Spec);
 
                --  In a generic context, analyze the original domain of