New gdb.ada/repeat_dyn testcase.

This patch introduces a testcase that exercises a scenario
which used to trigger an internal-error, but no longer does:

Consider the following array:

   type Small is new Integer range Ident (1) .. Ident (10);
   type Table is array (1 .. 3) of Small;
   A1 : Table := (3, 5, 8);

The particularity of this array is that the type of each element
is a range type whose bounds are dynamic, since they depend on
the value returned by Ident (1) and Ident (10). Trying to apply
the repeat operator ('@') on one of its elements used to yield
an internal error:

    (gdb) p a1(1)@3
    $1 =
    /[...]/gdbtypes.c:4512: internal-error:
    copy_type: Assertion `TYPE_OBJFILE_OWNED (type)' failed.

Although the issue no longer appears, the testcase is still
interesting to have.

gdb/testsuite/ChangeLog:

        * gdb.ada/repeat_dyn: New testcase.

Tested on x86_64-linux with clean results.

gdb/testsuite/ChangeLog

@@ -1,3 +1,7 @@
+2017-11-30  Joel Brobecker  <brobecker@adacore.com>
+
+	* gdb.ada/repeat_dyn: New testcase.
+
 2017-11-30  Ulrich Weigand  <uweigand@de.ibm.com>
 
 	* gdb.cell/gcore.exp: Fix typo when setting spu_bin.

gdb/testsuite/gdb.ada/repeat_dyn.exp

@@ -0,0 +1,30 @@
+# Copyright 2016-2017 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/>.
+
+load_lib "ada.exp"
+
+standard_ada_testfile foo_oc22_002
+
+if {[gdb_compile_ada "${srcfile}" "${binfile}" executable [list debug]] != "" } {
+  return -1
+}
+
+clean_restart ${testfile}
+
+set bp_location [gdb_get_line_number "STOP" ${testdir}/foo_oc22_002.adb]
+runto "foo_oc22_002.adb:$bp_location"
+
+gdb_test "print a1(1)@3" \
+         " = \\(3, 5, 8\\)"

gdb/testsuite/gdb.ada/repeat_dyn/foo_oc22_002.adb

@@ -0,0 +1,25 @@
+--  Copyright 2016-2017 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 Foo_OC22_002 is
+   type Small is new Integer range Ident (1) .. Ident (10);
+   type Table is array (1 .. 3) of Small;
+
+   A1 : Table := (3, 5, 8);
+begin
+   Do_Nothing (A1'Address);  -- STOP
+end Foo_OC22_002;

gdb/testsuite/gdb.ada/repeat_dyn/pck.adb

@@ -0,0 +1,27 @@
+--  Copyright 2016-2017 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
+   function Ident (I : Integer) return Integer
+   is
+   begin
+      return I;
+   end Ident;
+
+   procedure Do_Nothing (A : System.Address) is
+   begin
+      null;
+   end Do_Nothing;
+end Pck;

gdb/testsuite/gdb.ada/repeat_dyn/pck.ads

@@ -0,0 +1,22 @@
+--  Copyright 2016-2017 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
+   function Ident (I : Integer) return Integer;
+
+   procedure Do_Nothing (A : System.Address);
+end Pck;