[gcc r14-4275] ada: Fix deferred constant wrongly rejected
Marc Poulhi?s
dkm@gcc.gnu.org
Tue Sep 26 11:46:17 GMT 2023
https://gcc.gnu.org/g:f6367fc211e52b3f7f8d0f2c481e20cb69839071
commit r14-4275-gf6367fc211e52b3f7f8d0f2c481e20cb69839071
Author: Eric Botcazou <ebotcazou@adacore.com>
Date: Sat Sep 16 20:29:20 2023 +0200
ada: Fix deferred constant wrongly rejected
This recent regression occurs when the nominal subtype of the constant is a
discriminated record type with default discriminants.
gcc/ada/
PR ada/110488
* sem_ch3.adb (Analyze_Object_Declaration): Do not build a default
subtype for a deferred constant in the definite case too.
Diff:
---
gcc/ada/sem_ch3.adb | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/gcc/ada/sem_ch3.adb b/gcc/ada/sem_ch3.adb
index 92902a7debb..c79d323395f 100644
--- a/gcc/ada/sem_ch3.adb
+++ b/gcc/ada/sem_ch3.adb
@@ -5048,9 +5048,11 @@ package body Sem_Ch3 is
Apply_Length_Check (E, T);
end if;
- -- When possible, build the default subtype
+ -- When possible, and not a deferred constant, build the default subtype
- elsif Build_Default_Subtype_OK (T) then
+ elsif Build_Default_Subtype_OK (T)
+ and then (not Constant_Present (N) or else Present (E))
+ then
if No (E) then
Act_T := Build_Default_Subtype (T, N);
else
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