* [COMMITED] ada: Only reject volatile ghost objects when SPARK_Mode is On
@ 2022-09-26 9:14 Marc Poulhiès
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From: Marc Poulhiès @ 2022-09-26 9:14 UTC (permalink / raw)
To: gcc-patches; +Cc: Piotr Trojanek
From: Piotr Trojanek <trojanek@adacore.com>
SPARK rule that forbids ghost volatile objects is only affecting proof
and not generation of object code. It is now only applied where SPARK_Mode
is On. This flexibility is needed to compile code automatically instrumented
by GNATcoverage.
gcc/ada/
* contracts.adb (Analyze_Object_Contract): Check SPARK_Mode before
applying SPARK rule.
---
gcc/ada/contracts.adb | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/ada/contracts.adb b/gcc/ada/contracts.adb
index 34db67a8cab..dd573d374c6 100644
--- a/gcc/ada/contracts.adb
+++ b/gcc/ada/contracts.adb
@@ -1207,7 +1207,7 @@ package body Contracts is
-- A Ghost object cannot be effectively volatile (SPARK RM 6.9(7) and
-- SPARK RM 6.9(19)).
- elsif Is_Effectively_Volatile (Obj_Id) then
+ elsif SPARK_Mode = On and then Is_Effectively_Volatile (Obj_Id) then
Error_Msg_N ("ghost object & cannot be volatile", Obj_Id);
-- A Ghost object cannot be imported or exported (SPARK RM 6.9(7)).
--
2.25.1
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