From: Steve Baird <ba...@adacore.com>

In some cases an array aggregate with statically known bounds and at least
one bound outside of the range of a 32-bit signed integer causes
a bugbox.

gcc/ada/ChangeLog:

        * exp_aggr.adb (Convert_To_Positional.Flatten): Avoid raising
        Constraint_Error in UI_To_Int by testing UI_Is_In_Int_Range first.

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

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

diff --git a/gcc/ada/exp_aggr.adb b/gcc/ada/exp_aggr.adb
index c63d22b58fa..1cfc97b5bc6 100644
--- a/gcc/ada/exp_aggr.adb
+++ b/gcc/ada/exp_aggr.adb
@@ -4509,6 +4509,11 @@ package body Exp_Aggr is
             return False;
          end if;
 
+         if not (UI_Is_In_Int_Range (Lov) and UI_Is_In_Int_Range (Hiv)) then
+            --  guard against raising C_E in UI_To_Int
+            return False;
+         end if;
+
          --  Determine if set of alternatives is suitable for conversion and
          --  build an array containing the values in sequence.
 
-- 
2.43.0

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