From: Piotr Trojanek <trojanek@adacore.com>
Date: Mon, 3 Oct 2022 14:49:19 +0000 (+0200)
Subject: ada: Reject conditional goto in lock-free protected subprograms
X-Git-Tag: basepoints/gcc-14~4084
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1180b8fb8c74da9991a1e1066961d1b3f2bd6e4b;p=thirdparty%2Fgcc.git

ada: Reject conditional goto in lock-free protected subprograms

In lock-free protected subprograms we don't allow goto statements;
likewise, we now reject conditional goto statements.

This fix only affects semantic checking mode with switch -gnatc.
In ordinary compilation we already rejected conditional goto after
it was expanded into ordinary goto.

gcc/ada/

	* sem_ch9.adb (Allows_Lock_Free_Implementation): Reject
	conditional goto statements.
---

diff --git a/gcc/ada/sem_ch9.adb b/gcc/ada/sem_ch9.adb
index 6506358a02b7..f2a590178653 100644
--- a/gcc/ada/sem_ch9.adb
+++ b/gcc/ada/sem_ch9.adb
@@ -453,7 +453,7 @@ package body Sem_Ch9 is
 
                   --  Goto statements restricted
 
-                  elsif Kind = N_Goto_Statement then
+                  elsif Kind in N_Goto_Statement | N_Goto_When_Statement then
                      if Lock_Free_Given then
                         Error_Msg_N ("goto statement not allowed", N);
                         return Skip;