gdb/

	Support constant DW_AT_data_member_location by GCC PR debug/40659.
	* dwarf2read.c
	(dwarf2_add_field <DW_TAG_member> <DW_AT_data_member_location>):
	Initialize BYTE_OFFSET to 0 by default.  Explicitly check if
	attr_form_is_block.
	(dwarf2_add_field <DW_TAG_inheritance> <DW_AT_data_member_location>)
	(read_common_block <DW_AT_data_member_location>): New variable
	byte_offset.  Fix crash on non-DW_BLOCK ATTR values.

gdb/testsuite/
	Support constant DW_AT_data_member_location by GCC PR debug/40659.
	* gdb.dwarf2/dw2-inheritance.exp, gdb.dwarf2/dw2-inheritance.S: New.

1 files changed, 40 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inheritance.exp b/gdb/testsuite/gdb.dwarf2/dw2-inheritance.exp
new file mode 100644
index 0000000..2eb5b46
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-inheritance.exp
@@ -0,0 +1,40 @@
+# Copyright 2009 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 DW_TAG_inheritance using constant DW_AT_data_member_location
+# introduced by GCC PR debug/40659.
+
+# This test can only be run on targets which support DWARF-2 and use gas.
+# For now pick a sampling of likely targets.
+if {![istarget *-*-linux*]
+    && ![istarget *-*-gnu*]
+    && ![istarget *-*-elf*]
+    && ![istarget *-*-openbsd*]
+    && ![istarget arm-*-eabi*]
+    && ![istarget powerpc-*-eabi*]} {
+    return 0  
+}
+
+set testfile "dw2-inheritance"
+set srcfile ${testfile}.S
+set executable ${testfile}.x
+
+if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${objdir}/${subdir}/${executable}" object {nodebug}] != "" } {
+    return -1
+}
+
+clean_restart $executable
+
+gdb_test "ptype inherited" "type = class inherited .*"