From: Eric Botcazou <ebotca...@adacore.com>
This happens when the pragmas are deferred to the back-end from an external
unit to the main unit that is generic, because the back-end does not compile
a main unit that is generic.
gcc/ada/
* sem_prag.adb (Process_Compile_Time_Warning_Or_Error): Do not defer
anything to the back-end when the main unit is generic.
Tested on x86_64-pc-linux-gnu, committed on master.
---
gcc/ada/sem_prag.adb | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/gcc/ada/sem_prag.adb b/gcc/ada/sem_prag.adb
index b74c60cd183..0d62b04cc37 100644
--- a/gcc/ada/sem_prag.adb
+++ b/gcc/ada/sem_prag.adb
@@ -8137,7 +8137,9 @@ package body Sem_Prag is
-- then. For example, if the expression is "Record_Type'Size /= 32"
-- it might be known after the back end has determined the size of
-- Record_Type. We do not defer validation if we're inside a generic
- -- unit, because we will have more information in the instances.
+ -- unit, because we will have more information in the instances, and
+ -- this ultimately applies to the main unit itself, because it is not
+ -- compiled by the back end when it is generic.
if Compile_Time_Known_Value (Arg1x) then
Validate_Compile_Time_Warning_Or_Error (N, Sloc (Arg1));
@@ -8155,7 +8157,10 @@ package body Sem_Prag is
end if;
end loop;
- if No (P) then
+ if No (P)
+ and then
+ Nkind (Unit (Cunit (Main_Unit))) not in N_Generic_Declaration
+ then
Defer_Compile_Time_Warning_Error_To_BE (N);
end if;
end if;
--
2.40.0
