From: Eric Botcazou <ebotca...@adacore.com>

The compiler reports that an actual does not match the formal when there
is a defaulted formal discrete type because Check_Formal_Package_Instance
fails to skip the implicit base type generated by the compiler.

gcc/ada/ChangeLog:
        PR ada/114636
        * sem_ch12.adb (Check_Formal_Package_Instance): For a defaulted
        formal discrete type, skip the generated implicit base type.

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/sem_ch12.adb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/gcc/ada/sem_ch12.adb b/gcc/ada/sem_ch12.adb
index b406cfce3b3..33f6f18c50b 100644
--- a/gcc/ada/sem_ch12.adb
+++ b/gcc/ada/sem_ch12.adb
@@ -7337,8 +7337,12 @@ package body Sem_Ch12 is
          then
             --  If the formal is a tagged type the corresponding class-wide
             --  type has been generated as well, and it must be skipped.
+            --  Likewise, for a formal discrete type, the base type has been
+            --  generated as well (see Analyze_Formal_Discrete_Type).
 
-            if Is_Type (E2) and then Is_Tagged_Type (E2) then
+            if Is_Type (E2)
+              and then (Is_Tagged_Type (E2) or else Is_Enumeration_Type (E2))
+            then
                Next_Entity (E2);
             end if;
 
-- 
2.43.0

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