===================================================================
@@ -906,10 +906,12 @@ package body Sem_Res is
Expr := Original_Node (Expression (Parent (Comp)));
-- Return True if the expression is a call to a function
- -- (including an attribute function such as Image) with
- -- a result that requires a transient scope.
+ -- (including an attribute function such as Image, or a
+ -- user-defined operator) with a result that requires a
+ -- transient scope.
if (Nkind (Expr) = N_Function_Call
+ or else Nkind (Expr) in N_Op
or else (Nkind (Expr) = N_Attribute_Reference
and then Present (Expressions (Expr))))
and then Requires_Transient_Scope (Etype (Expr))
To determine whether a function that returns a record type uses the secondary stack, we examine the expressions of each component definition and return true if any of them is a function call that itself uses the secondary stack. This patch corrects an omission: the call may have been written as a operator in prefix or infix notation. The following must compile and execute quietly: ---- with Ada.Strings.Unbounded;use Ada.Strings.Unbounded; pragma Warnings (Off); with system.secondary_stack; use system.secondary_stack; procedure SS_Leak is function "+" (Item : in String) return Unbounded_String renames To_Unbounded_String; type Rate_Record is record Feed_Id : Unbounded_String := +"Y"; end record; procedure P is x : Rate_Record; begin null; end; Top : Mark_Id := SS_Mark; begin for I in 1 .. 5 loop P; if SS_Mark /= Top then raise Constraint_Error; end if; end loop; end SS_Leak; Tested on x86_64-pc-linux-gnu, committed on trunk 2010-06-23 Ed Schonberg <schonberg@adacore.com> * sem_res.adb (Uses_SS): The expression that initializes a controlled component of a record type may be a user-defined operator that is rewritten as a function call.