Merge GDB 7.5.1

gdb/testsuite/gdb.dwarf2/dw2-icc-opaque.exp

-# Copyright 2011-2012 Free Software Foundation, Inc.
-#
+# Copyright (C) 2011-2012 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 dwarf.exp
 
+# Test that we can correctly resolve opaque structures compiled by the Intel
+# compiler, which does not set DW_AT_declaration on opaque structure types.
+# This is GDB PR symtab/13277.
+
 # This test can only be run on targets which support DWARF-2 and use gas.
 if {![dwarf2_support]} {
-    return 0  
+    return 0
 }
 
-set testfile "dw2-simple-locdesc"
-set srcfile ${testfile}.S
-set executable ${testfile}.x
-set binfile ${objdir}/${subdir}/${executable}
+standard_testfile .S
+set executable ${testfile}
 
 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" object {}] != "" } {
     return -1
 }
 
 clean_restart $executable
 
-# Re: [patch 2/2] Fix decode_locdesc for gcc-4.7.x optimized DWARF
-# http://sourceware.org/ml/gdb-patches/2011-07/msg00766.html
-set test "p &s.shl"
-gdb_test_multiple $test $test {
-    -re " = \\(int \\*\\) 0x1000000\r\n$gdb_prompt $" {
-        pass $test
-    }
-    -re " = \\(int \\*\\) 0x14\r\n$gdb_prompt $" {
-        kfail "symtab/13307" $test
-    }
+# Before PR 13277 was fixed, this would output:
+# type = struct opaque_struct_t {
+#     <no data fields>
+# } *
+if { [istarget s390x-*-*] && [is_lp64_target] } {
+    # The hand-coded DWARF info hard-codes a pointer size of 4 bytes,
+    # which is represented as @mode32 on s390x.
+    gdb_test "ptype p_struct" "type = struct opaque_struct_t {\r\n *int wrapped_value;\r\n} \\* @mode32"
+} else {
+    gdb_test "ptype p_struct" "type = struct opaque_struct_t {\r\n *int wrapped_value;\r\n} \\*"
 }
-
-# Re: RFC: fix DW_AT_data_member_location buglet
-# http://sourceware.org/ml/gdb-patches/2011-05/msg00291.html
-gdb_test "p &s.data4" { = \(int \*\) 0x10000}