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* [gcc r13-297] [Ada] Reset Reachable field when mutating label into loop entity
@ 2022-05-11 8:55 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2022-05-11 8:55 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:470fff3d8e48ede98f0a74a1beb9eafc7452f4b4
commit r13-297-g470fff3d8e48ede98f0a74a1beb9eafc7452f4b4
Author: Piotr Trojanek <trojanek@adacore.com>
Date: Fri Jan 28 18:12:18 2022 +0100
[Ada] Reset Reachable field when mutating label into loop entity
An entity flag Reachable now only applies to E_Label entities and needs
to be explicitly reset when mutating labels into loop entities. Only
needed to prevent cascaded errors when compiling a malicious ACATS test
with -gnatq (try semantics, even if parse errors).
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:
---
gcc/ada/sem_ch5.adb | 1 +
1 file changed, 1 insertion(+)
diff --git a/gcc/ada/sem_ch5.adb b/gcc/ada/sem_ch5.adb
index f8e6d0c3e30..a0f22060007 100644
--- a/gcc/ada/sem_ch5.adb
+++ b/gcc/ada/sem_ch5.adb
@@ -4012,6 +4012,7 @@ package body Sem_Ch5 is
if Ekind (Ent) = E_Label then
Reinit_Field_To_Zero (Ent, F_Enclosing_Scope);
+ Reinit_Field_To_Zero (Ent, F_Reachable);
Mutate_Ekind (Ent, E_Loop);
if Nkind (Parent (Ent)) = N_Implicit_Label_Declaration then
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2022-05-11 8:55 [gcc r13-297] [Ada] Reset Reachable field when mutating label into loop entity Pierre-Marie de Rodat
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