Propagate endianity to subrange types

A subrange type should inherit its endianity from its base type.

gdb/ChangeLog
2019-12-04  Tom Tromey  <tromey@adacore.com>

	* gdbtypes.c (create_range_type): Inherit endianity
	from base type.

gdb/testsuite/ChangeLog
2019-12-04  Tom Tromey  <tromey@adacore.com>

	* gdb.ada/scalar_storage/storage.adb: New file.
	* gdb.ada/scalar_storage/pck.adb: New file.
	* gdb.ada/scalar_storage/pck.ads: New file.
	* gdb.ada/scalar_storage.exp: New file.

Change-Id: I2998ab919dc28aeff097763c4242f9bfb90823a3

7 files changed, 138 insertions, 0 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e09a588..f06f739 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 2019-12-04  Tom Tromey  <tromey@adacore.com>
 
+	* gdbtypes.c (create_range_type): Inherit endianity
+	from base type.
+
+2019-12-04  Tom Tromey  <tromey@adacore.com>
+
 	* ada-lang.c (decode_constrained_packed_array)
 	(ada_value_assign, value_assign_to_component): Update.
 	* dwarf2loc.c (rw_pieced_value, access_memory)
diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index 737ebfe..775e8c1 100644
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -949,6 +949,9 @@ create_range_type (struct type *result_type, struct type *index_type,
   if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0)
     TYPE_UNSIGNED (result_type) = 0;
 
+  TYPE_ENDIANITY_NOT_DEFAULT (result_type)
+    = TYPE_ENDIANITY_NOT_DEFAULT (index_type);
+
   return result_type;
 }
 
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 1c8aa86..3ba3692 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,5 +1,12 @@
 2019-12-04  Tom Tromey  <tromey@adacore.com>
 
+	* gdb.ada/scalar_storage/storage.adb: New file.
+	* gdb.ada/scalar_storage/pck.adb: New file.
+	* gdb.ada/scalar_storage/pck.ads: New file.
+	* gdb.ada/scalar_storage.exp: New file.
+
+2019-12-04  Tom Tromey  <tromey@adacore.com>
+
 	* gdb.base/endianity.c (struct otherendian) <f>: New field.
 	(main): Initialize it.
 	* gdb.base/endianity.exp: Update.
diff --git a/gdb/testsuite/gdb.ada/scalar_storage.exp b/gdb/testsuite/gdb.ada/scalar_storage.exp
new file mode 100644
index 0000000..92ad4ed
--- /dev/null
+++ b/gdb/testsuite/gdb.ada/scalar_storage.exp
@@ -0,0 +1,36 @@
+# Copyright 2019 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 range types with scalar storage order are handled
+# properly.
+
+load_lib "ada.exp"
+
+standard_ada_testfile storage
+
+if {[gdb_compile_ada "${srcfile}" "${binfile}" executable [list debug ]] != "" } {
+  return -1
+}
+
+clean_restart ${testfile}
+
+set bp_location [gdb_get_line_number "START" ${testdir}/storage.adb]
+if ![runto "storage.adb:$bp_location" ] then {
+  perror "Couldn't run ${testfile}"
+  return
+}
+
+gdb_test "print V_LE" "= \\(value => 126\\)"
+gdb_test "print V_BE" "= \\(value => 126\\)"
diff --git a/gdb/testsuite/gdb.ada/scalar_storage/pck.adb b/gdb/testsuite/gdb.ada/scalar_storage/pck.adb
new file mode 100644
index 0000000..6535991
--- /dev/null
+++ b/gdb/testsuite/gdb.ada/scalar_storage/pck.adb
@@ -0,0 +1,21 @@
+--  Copyright 2019 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;
diff --git a/gdb/testsuite/gdb.ada/scalar_storage/pck.ads b/gdb/testsuite/gdb.ada/scalar_storage/pck.ads
new file mode 100644
index 0000000..b8d0010
--- /dev/null
+++ b/gdb/testsuite/gdb.ada/scalar_storage/pck.ads
@@ -0,0 +1,19 @@
+--  Copyright 2019 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;
diff --git a/gdb/testsuite/gdb.ada/scalar_storage/storage.adb b/gdb/testsuite/gdb.ada/scalar_storage/storage.adb
new file mode 100644
index 0000000..abc1a83
--- /dev/null
+++ b/gdb/testsuite/gdb.ada/scalar_storage/storage.adb
@@ -0,0 +1,47 @@
+--  Copyright 2019 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;
+with System.Storage_Elements; use System.Storage_Elements;
+
+procedure Storage is
+   subtype Some_Range is Natural range 0..127;
+
+   type Rec is record
+      Value : Some_Range;
+   end record;
+   
+   for Rec use record
+      Value at 0 range 0..127;
+   end record;
+
+   type Rec_LE is new Rec;
+   for Rec_LE'Bit_Order use System.Low_Order_First;
+   for Rec_LE'Scalar_Storage_Order use System.Low_Order_First;
+
+   type Rec_BE is new Rec;
+   for Rec_BE'Bit_Order use System.High_Order_First;
+   for Rec_BE'Scalar_Storage_Order use System.High_Order_First;
+
+   V_LE : Rec_LE;
+   V_BE : Rec_BE;
+
+begin
+   V_LE.Value := 126;
+   V_BE.Value := 126;
+
+   Do_Nothing (V_LE'Address);  --  START
+   Do_Nothing (V_BE'Address);
+end Storage;