Add Ada test case with long array indices

This patch adds a test case to test that the previous two patches did
their job.

With the current gdb, this test fails:

    (gdb) print some_regular_access.all
    Value out of range.

The bug here is that the array has an index type that is wider than
'int', which is perfectly acceptable in Ada.

Note that this series doesn't quite go far enough: in Ada the index
could be a 128-bit integer.  This change would be more invasive; and
in practice this doesn't really seem to come up much -- so I've
deferred it.

Author: tromey

gdb/testsuite/gdb.ada/array_long_idx.exp

@@ -0,0 +1,36 @@
+# Copyright 2025 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Test that long array index types work.
+
+load_lib "ada.exp"
+
+require allow_ada_tests
+
+standard_ada_testfile main
+
+if {[gdb_compile_ada "${srcfile}" "${binfile}" executable {debug}] != ""} {
+    return
+}
+
+clean_restart ${testfile}
+
+set bp_location [gdb_get_line_number STOP ${testdir}/main.adb]
+if {![runto "main.adb:$bp_location"]} {
+    return
+}
+
+gdb_test "print some_regular_access.all" \
+    [string_to_regexp " = (-2147483648 => (-9223372036854775808 => 1, 2, 3), (-9223372036854775808 => 4, 5, 6))"]

gdb/testsuite/gdb.ada/array_long_idx/main.adb

@@ -0,0 +1,28 @@
+--  Copyright 2025 Free Software Foundation, Inc.
+--
+--  This program is free software; you can redistribute it and/or modify
+--  it under the terms of the GNU General Public License as published by
+--  the Free Software Foundation; either version 3 of the License, or
+--  (at your option) any later version.
+--
+--  This program is distributed in the hope that it will be useful,
+--  but WITHOUT ANY WARRANTY; without even the implied warranty of
+--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--  GNU General Public License for more details.
+--
+--  You should have received a copy of the GNU General Public License
+--  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+with Pck; use Pck;
+
+procedure Main is
+
+   type My_Array is array (Integer range <>, Long_Integer range <>) of Integer;
+
+   type My_Reg_Acc is access all My_Array;
+
+   Some_Regular_Access : My_Reg_Acc := new My_Array'((1, 2, 3), (4, 5, 6));
+
+begin
+   Do_Nothing (Some_Regular_Access'Address); -- STOP
+end Main;

gdb/testsuite/gdb.ada/array_long_idx/pck.adb

@@ -0,0 +1,21 @@
+--  Copyright 2012-2025 Free Software Foundation, Inc.
+--
+--  This program is free software; you can redistribute it and/or modify
+--  it under the terms of the GNU General Public License as published by
+--  the Free Software Foundation; either version 3 of the License, or
+--  (at your option) any later version.
+--
+--  This program is distributed in the hope that it will be useful,
+--  but WITHOUT ANY WARRANTY; without even the implied warranty of
+--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--  GNU General Public License for more details.
+--
+--  You should have received a copy of the GNU General Public License
+--  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package body Pck is
+   procedure Do_Nothing (A : System.Address) is
+   begin
+      null;
+   end Do_Nothing;
+end Pck;

gdb/testsuite/gdb.ada/array_long_idx/pck.ads

@@ -0,0 +1,19 @@
+--  Copyright 2012-2025 Free Software Foundation, Inc.
+--
+--  This program is free software; you can redistribute it and/or modify
+--  it under the terms of the GNU General Public License as published by
+--  the Free Software Foundation; either version 3 of the License, or
+--  (at your option) any later version.
+--
+--  This program is distributed in the hope that it will be useful,
+--  but WITHOUT ANY WARRANTY; without even the implied warranty of
+--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--  GNU General Public License for more details.
+--
+--  You should have received a copy of the GNU General Public License
+--  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+with System;
+package Pck is
+   procedure Do_Nothing (A : System.Address);
+end Pck;