diff options
| -rw-r--r-- | gcc/ada/sem_attr.adb | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/ada/sem_attr.adb b/gcc/ada/sem_attr.adb index 4fd270a..2fd95f3 100644 --- a/gcc/ada/sem_attr.adb +++ b/gcc/ada/sem_attr.adb @@ -6683,6 +6683,12 @@ package body Sem_Attr is elsif Depends_On_Private (P_Type) then Error_Attr_P ("prefix type of % is a private extension"); + -- Disallow view conversions to interfaces in order to avoid + -- depending on whether an interface type is used as a parent + -- or progenitor type. + + elsif Is_Interface (Node (First_Elmt (Parents))) then + Error_Attr_P ("type of % cannot be an interface"); end if; -- Generate a view conversion and analyze it |