* [Ada] Stronger assertion about flag for checking static expressions
@ 2021-07-07 16:25 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2021-07-07 16:25 UTC (permalink / raw)
To: gcc-patches; +Cc: Piotr Trojanek
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Ensure that Checking_For_Potentially_Static_Expression flag is
manipulated in a stack-like manner (with stack depth 1 at the most). The
previous assertion didn't prevent us from setting the flag to True or to
False twice in a row.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* sem_eval.adb (Set_Checking_Potentially_Static_Expression):
Stronger assertion.
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diff --git a/gcc/ada/sem_eval.adb b/gcc/ada/sem_eval.adb
--- a/gcc/ada/sem_eval.adb
+++ b/gcc/ada/sem_eval.adb
@@ -6481,11 +6481,10 @@ package body Sem_Eval is
procedure Set_Checking_Potentially_Static_Expression (Value : Boolean) is
begin
- -- Verify that we're not currently checking for a potentially static
- -- expression unless we're disabling such checking.
+ -- Verify that we only start/stop checking for a potentially static
+ -- expression and do not start or stop it twice in a row.
- pragma Assert
- (not Checking_For_Potentially_Static_Expression or else not Value);
+ pragma Assert (Checking_For_Potentially_Static_Expression /= Value);
Checking_For_Potentially_Static_Expression := Value;
end Set_Checking_Potentially_Static_Expression;
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