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-rw-r--r--gcc/ada/sem_eval.adb9
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/ada/sem_eval.adb b/gcc/ada/sem_eval.adb
index 314c110..fce4643 100644
--- a/gcc/ada/sem_eval.adb
+++ b/gcc/ada/sem_eval.adb
@@ -347,7 +347,11 @@ package body Sem_Eval is
-- Here we have a static predicate (note that it could have arisen from
-- an explicitly specified Dynamic_Predicate whose expression met the
- -- rules for being predicate-static).
+ -- rules for being predicate-static). If the expression is known at
+ -- compile time and obeys the predicate, then it is static and must be
+ -- labeled as such, which matters e.g. for case statements. The original
+ -- expression may be a type conversion of a variable with a known value,
+ -- which might otherwise not be marked static.
-- Case of real static predicate
@@ -356,6 +360,7 @@ package body Sem_Eval is
(Val => Make_Real_Literal (Sloc (Expr), Expr_Value_R (Expr)),
Typ => Typ)
then
+ Set_Is_Static_Expression (Expr);
return;
end if;
@@ -365,6 +370,7 @@ package body Sem_Eval is
if Real_Or_String_Static_Predicate_Matches
(Val => Expr_Value_S (Expr), Typ => Typ)
then
+ Set_Is_Static_Expression (Expr);
return;
end if;
@@ -376,6 +382,7 @@ package body Sem_Eval is
-- If static predicate matches, nothing to do
if Choices_Match (Expr, Static_Discrete_Predicate (Typ)) = Match then
+ Set_Is_Static_Expression (Expr);
return;
end if;
end if;