* dwarf2loc.c (invalid_synthetic_pointer): Move earlier.

	(indirect_pieced_value): Call dwarf2_fetch_constant_bytes
	if needed.
	* dwarf2loc.h (dwarf2_fetch_constant_bytes): Declare.
	* dwarf2read.c (write_constant_as_bytes)
	(dwarf2_fetch_constant_bytes): New functions.
gdb/testsuite
	* gdb.dwarf2/implptrconst.c: New file.
	* gdb.dwarf2/implptrconst.exp: New file.
	* lib/dwarf.exp (Dwarf::_nz_quote): New proc.
	(Dwarf::_handle_DW_FORM): Handle DW_FORM_block1.
	(Dwarf::_location): Handle DW_OP_GNU_implicit_pointer.

1 files changed, 103 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.dwarf2/implptrconst.exp b/gdb/testsuite/gdb.dwarf2/implptrconst.exp
new file mode 100644
index 00000000000..4ce17135036
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/implptrconst.exp
@@ -0,0 +1,103 @@
+# Copyright 2013 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
+
+# This test can only be run on targets which support DWARF-2 and use gas.
+if {![dwarf2_support]} {
+    return 0  
+}
+
+if { [skip_cplus_tests] } { continue }
+
+standard_testfile .c implptrconst-dw.S
+
+# Make some DWARF for the test.
+set asm_file [standard_output_file $srcfile2]
+Dwarf::assemble $asm_file {
+    cu 0 2 8 {
+ 	compile_unit {} {
+	    declare_labels byte_label size_type_label array_label
+	    declare_labels var_label ptr_label
+
+	    byte_label: base_type {
+		{name byte}
+		{encoding @DW_ATE_signed}
+		{byte_size 1 DW_FORM_sdata}
+	    }
+
+	    size_type_label: base_type {
+		{name sizetype}
+		{encoding @DW_ATE_unsigned}
+		{byte_size 8 DW_FORM_sdata}
+	    }
+
+	    array_label: array_type {
+		{type :$byte_label}
+	    } {
+		subrange_type {
+		    {type :$size_type_label}
+		    {upper_bound 7 DW_FORM_data1}
+		}
+	    }
+
+	    var_label: DW_TAG_variable {
+		{name b}
+		{type :$array_label}
+		{const_value rstuvwxy DW_FORM_block1}
+	    }
+
+	    ptr_label: pointer_type {
+		{byte_size 8 DW_FORM_sdata}
+		{type :$byte_label}
+	    }
+
+	    DW_TAG_variable {
+		{name c}
+		{type :$ptr_label}
+		{location {
+		    GNU_implicit_pointer $var_label 0
+		} SPECIAL_expr}
+	    }
+	}
+    }
+}
+
+if  {[gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile}1.o \
+	  object {nodebug}] != ""} {
+    return -1
+}
+
+if  {[gdb_compile $asm_file ${binfile}2.o object {nodebug}] != ""} {
+    return -1
+}
+
+if  {[gdb_compile [list ${binfile}1.o ${binfile}2.o] \
+	  "${binfile}" executable {}] != ""} {
+    return -1
+}
+
+# We need --readnow because otherwise we never read in the CU we
+# created above.
+set saved_gdbflags $GDBFLAGS
+set GDBFLAGS "$GDBFLAGS -readnow"
+clean_restart ${testfile}
+set GDBFLAGS $saved_gdbflags
+
+if ![runto_main] {
+    return -1
+}
+
+gdb_test "print *c" " = 114 'r'"