From: Eric Botcazou <ebotca...@adacore.com>
The result must be False as per the RM 4.5.2 (30.2/4) clause.
gcc/ada/
* exp_ch4.adb (Expand_N_In): Deal specifically with a null operand.
Tested on x86_64-pc-linux-gnu, committed on master.
---
gcc/ada/exp_ch4.adb | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/gcc/ada/exp_ch4.adb b/gcc/ada/exp_ch4.adb
index 3f864f2675c..537d7a6311c 100644
--- a/gcc/ada/exp_ch4.adb
+++ b/gcc/ada/exp_ch4.adb
@@ -6972,11 +6972,13 @@ package body Exp_Ch4 is
-- If the null exclusion checks are not compatible, need to
-- perform further checks. In other words, we cannot have
- -- Ltyp including null and Typ excluding null. All other cases
- -- are OK.
+ -- Ltyp including null or Lop being null, and Typ excluding
+ -- null. All other cases are OK.
Check_Null_Exclusion :=
- Can_Never_Be_Null (Typ) and then not Can_Never_Be_Null (Ltyp);
+ Can_Never_Be_Null (Typ)
+ and then (not Can_Never_Be_Null (Ltyp)
+ or else Nkind (Lop) = N_Null);
Typ := Designated_Type (Typ);
end if;
--
2.40.0
