Applying Class to an untagged incomplete type is legal, but classified
as obsolescent in Annex J (for Ada 2005 and later), so should be flagged
with a warning when the -gnatwj switch applies, as well as being
reported as a violation of No_Obsolescent_Features when that restriction
is enabled. Both of these warnings are made effective by this change.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* sem_ch8.adb (Find_Type): Check the No_Obsolescent_Features
restriction for 'Class applied to an untagged incomplete
type (when Ada_Version >= Ada_2005). Remove disabling of the
warning message for such usage, along with the ??? comment,
which no longer applies (because the -gnatg switch no longer
sets Warn_On_Obsolescent_Feature).diff --git a/gcc/ada/sem_ch8.adb b/gcc/ada/sem_ch8.adb
--- a/gcc/ada/sem_ch8.adb
+++ b/gcc/ada/sem_ch8.adb
@@ -7893,16 +7893,18 @@ package body Sem_Ch8 is
Set_Entity (N, Any_Type);
return;
- -- ??? This test is temporarily disabled (always
- -- False) because it causes an unwanted warning on
- -- GNAT sources (built with -gnatg, which includes
- -- Warn_On_Obsolescent_ Feature). Once this issue
- -- is cleared in the sources, it can be enabled.
+ else
+ if Restriction_Check_Required (No_Obsolescent_Features)
+ then
+ Check_Restriction
+ (No_Obsolescent_Features, Prefix (N));
+ end if;
- elsif Warn_On_Obsolescent_Feature and then False then
- Error_Msg_N
- ("applying ''Class to an untagged incomplete type"
- & " is an obsolescent feature (RM J.11)?r?", N);
+ if Warn_On_Obsolescent_Feature then
+ Error_Msg_N
+ ("applying ''Class to an untagged incomplete type"
+ & " is an obsolescent feature (RM J.11)?r?", N);
+ end if;
end if;
end if;
