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-rw-r--r--gcc/ada/sem_eval.adb9
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/ada/sem_eval.adb b/gcc/ada/sem_eval.adb
index f970932..7640149 100644
--- a/gcc/ada/sem_eval.adb
+++ b/gcc/ada/sem_eval.adb
@@ -6837,6 +6837,15 @@ package body Sem_Eval is
then
return True;
+ -- Handle class-wide subtypes, which never have discriminants, while
+ -- class-wide types may have them (but they are always unknown).
+
+ elsif Ekind (T2) = E_Class_Wide_Subtype and then Etype (T2) = T1 then
+ return True;
+
+ elsif Ekind (T1) = E_Class_Wide_Subtype and then Etype (T1) = T2 then
+ return True;
+
-- Because of view exchanges in multiple instantiations, conformance
-- checking might try to match a partial view of a type with no
-- discriminants with a full view that has defaulted discriminants.