File gdb-ada-fix-gdb.ada-overloads.exp-on-s390x.patch of Package gdb

From 75397d995ffe1e1bbcfb75f9b4f744ba9c036d6d Mon Sep 17 00:00:00 2001
From: Tom de Vries <tdevries@suse.de>
Date: Tue, 15 Apr 2025 16:59:32 +0200
Subject: [PATCH 1/2] [gdb/ada] Fix gdb.ada/overloads.exp on s390x

On s390x-linux, with test-case gdb.ada/overloads.exp and gcc 7.5.0 I run into:
...
(gdb) print Oload(CA)^M
Could not find a match for oload^M
(gdb) FAIL: $exp: print Oload(CA)
...

The mismatch happens here in ada_type_match:
...
      return ftype->code () == atype->code ();
...
with:
...
(gdb) p ftype->code ()
$3 = TYPE_CODE_TYPEDEF
(gdb) p atype->code ()
$4 = TYPE_CODE_ARRAY
...

At the start of ada_type_match, typedefs are skipped:
...
  ftype = ada_check_typedef (ftype);
  atype = ada_check_typedef (atype);
...
but immediately after this, refs are skipped:
...
  if (ftype->code () == TYPE_CODE_REF)
    ftype = ftype->target_type ();
  if (atype->code () == TYPE_CODE_REF)
    atype = atype->target_type ();
...
which in this case makes ftype a typedef.

Fix this by using ada_check_typedef after skipping the refs as well.

Tested on x86_64-linux and s390x-linux.

Approved-By: Tom Tromey <tom@tromey.com>

PR ada/32409
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=32409
---
 gdb/ada-lang.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index fdb89cb0bb3..e9311c179b9 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -3944,9 +3944,9 @@ ada_type_match (struct type *ftype, struct type *atype)
   atype = ada_check_typedef (atype);
 
   if (ftype->code () == TYPE_CODE_REF)
-    ftype = ftype->target_type ();
+    ftype = ada_check_typedef (ftype->target_type ());
   if (atype->code () == TYPE_CODE_REF)
-    atype = atype->target_type ();
+    atype = ada_check_typedef (atype->target_type ());
 
   switch (ftype->code ())
     {

base-commit: bb86ddf7c6827ec9b467cc0107395f91b9cbc5d2
-- 
2.43.0