From: Piotr Trojanek <trojanek@adacore.com>
Date: Fri, 28 Jan 2022 09:24:04 +0000 (+0100)
Subject: [Ada] Add guard for making only legal labels unreachable
X-Git-Tag: basepoints/gcc-14~6916
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c8482b1e77a0008986c4019d0d69993f80f03775;p=thirdparty%2Fgcc.git

[Ada] Add guard for making only legal labels unreachable

An entity flag Reachable now only applies to E_Label entities. We had an
appropriate guard for setting this flag, but not for clearing.

Cleanup related to detection of uninitialized scalars with GOTO
statements.

gcc/ada/

	* sem_ch5.adb (Analyze_Statements): Only clear Reachable flag on
	proper label entities.
---

diff --git a/gcc/ada/sem_ch5.adb b/gcc/ada/sem_ch5.adb
index 81767d8c324..f8e6d0c3e30 100644
--- a/gcc/ada/sem_ch5.adb
+++ b/gcc/ada/sem_ch5.adb
@@ -4383,7 +4383,9 @@ package body Sem_Ch5 is
 
       S := First (L);
       while Present (S) loop
-         if Nkind (S) = N_Label then
+         if Nkind (S) = N_Label
+           and then Ekind (Entity (Identifier (S))) = E_Label
+         then
             Set_Reachable (Entity (Identifier (S)), False);
          end if;