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* [gcc r13-4959] ada: Cannot reference ghost entity in class-wide precondition
@ 2023-01-03  9:33 Marc Poulhi?s
  0 siblings, 0 replies; only message in thread
From: Marc Poulhi?s @ 2023-01-03  9:33 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:930b81af5b0207585819ea9988a0f50d009940a7

commit r13-4959-g930b81af5b0207585819ea9988a0f50d009940a7
Author: Javier Miranda <miranda@adacore.com>
Date:   Mon Nov 28 09:15:54 2022 +0000

    ada: Cannot reference ghost entity in class-wide precondition
    
    gcc/ada/
    
            * ghost.adb (Is_OK_Declaration): A reference to a Ghost entity may
            appear within the class-wide precondition of a helper subprogram.
            This context is treated as suitable because it was already
            verified when we were analyzing the original class-wide
            precondition.

Diff:
---
 gcc/ada/ghost.adb | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/gcc/ada/ghost.adb b/gcc/ada/ghost.adb
index 0f03285b024..0d2a23dc042 100644
--- a/gcc/ada/ghost.adb
+++ b/gcc/ada/ghost.adb
@@ -261,6 +261,16 @@ package body Ghost is
             then
                return True;
 
+            --  A reference to a Ghost entity may appear within the class-wide
+            --  precondition of a helper subprogram. This context is treated
+            --  as suitable because it was already verified when we were
+            --  analyzing the original class-wide precondition.
+
+            elsif Is_Subprogram (Current_Scope)
+              and then Present (Class_Preconditions_Subprogram (Current_Scope))
+            then
+               return True;
+
             --  References to Ghost entities may be relocated in internally
             --  generated bodies.

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