This patch corrects an error in the compiler whereby spurious
unreferenced warnings are generated on formal parameters of null generic
subprograms.
These changes also fix the parsing of aspects on formal parameters such
that the aspects now get properly set for all formal parameters in a
parameter list.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* par-ch6.adb (P_Formal_Part): Set Aspect_Specifications on all
formals instead of just the last in a formal id list.
* sem_ch6.adb (Analyze_Null_Procedure): Mark expanded null
generic procedures as trivial in order to avoid spurious
unreferenced warnings.diff --git a/gcc/ada/par-ch6.adb b/gcc/ada/par-ch6.adb
--- a/gcc/ada/par-ch6.adb
+++ b/gcc/ada/par-ch6.adb
@@ -1656,6 +1656,28 @@ package body Ch6 is
P_Aspect_Specifications (Specification_Node, False);
+ -- Set the aspect specifications for previous Ids
+
+ if Has_Aspects (Specification_Node)
+ and then Prev_Ids (Specification_Node)
+ then
+ -- Loop through each previous id
+
+ declare
+ Prev_Id : Node_Id := Prev (Specification_Node);
+ begin
+ loop
+ Set_Aspect_Specifications
+ (Prev_Id, Aspect_Specifications (Specification_Node));
+
+ -- Exit when we reach the first parameter in the list
+
+ exit when not Prev_Ids (Prev_Id);
+ Prev_Id := Prev (Prev_Id);
+ end loop;
+ end;
+ end if;
+
if Token = Tok_Right_Paren then
Scan; -- past right paren
exit Specification_Loop;
diff --git a/gcc/ada/sem_ch6.adb b/gcc/ada/sem_ch6.adb
--- a/gcc/ada/sem_ch6.adb
+++ b/gcc/ada/sem_ch6.adb
@@ -2063,6 +2063,11 @@ package body Sem_Ch6 is
Analyze_Generic_Subprogram_Body (Null_Body, Prev);
Is_Completion := True;
+ -- Mark the newly generated subprogram body as trivial
+
+ Set_Is_Trivial_Subprogram
+ (Defining_Unit_Name (Specification (Null_Body)));
+
goto Leave;
else
