[COMMITED] ada: Fix inserting of validity checks in lock-free protected subprograms

[COMMITED] ada: Fix inserting of validity checks in lock-free protected subprograms

[Marc Poulhiès]

From: Piotr Trojanek <trojanek@adacore.com>

Validity checks for statements in a lock-free implementation of
protected subprogram were wrongly inserted in front of the original
statements. This happened because the lock-free implementation was
created as a shallow copy, where only the protected body statements were
copied while its children still had the Parent pointing to the original
statements.

gcc/ada/

	* exp_ch9.adb (Build_Lock_Free_Protected_Subprogram_Body): Replace
	shallow copy of protected statements with a deep copy.

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/exp_ch9.adb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/ada/exp_ch9.adb b/gcc/ada/exp_ch9.adb
index 8abff55110d..decf61782af 100644
--- a/gcc/ada/exp_ch9.adb
+++ b/gcc/ada/exp_ch9.adb
@@ -2797,7 +2797,7 @@ package body Exp_Ch9 is
             Expected_Comp : Entity_Id;
             Stmt          : Node_Id;
             Stmts         : List_Id :=
-                              New_Copy_List (Statements (Hand_Stmt_Seq));
+                              New_Copy_List_Tree (Statements (Hand_Stmt_Seq));
             Typ_Size      : Int;
             Unsigned      : Entity_Id;
 
-- 
2.34.1