* valops.c (value_cast_structs): Return NULL for failure.

	(value_cast): Handle NULL from value_cast_structs.
	(value_fetch_lazy): Call check_typedef.  Remove unused variable.

	testsuite/
	* gdb.base/structs3.c, gdb.base/structs3.exp: New files.

3 files changed, 83 insertions, 0 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 4044b60..59b26a4 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2008-09-08  Daniel Jacobowitz  <dan@codesourcery.com>
+
+	* gdb.base/structs3.c, gdb.base/structs3.exp: New files.
+
 2008-09-08  Jerome Guitton  <guitton@adacore.com>
 
 	* gdb.arch/powerpc-aix-prologue.c (stack_check_probe_1)
diff --git a/gdb/testsuite/gdb.base/structs3.c b/gdb/testsuite/gdb.base/structs3.c
new file mode 100644
index 0000000..0c20fd7
--- /dev/null
+++ b/gdb/testsuite/gdb.base/structs3.c
@@ -0,0 +1,42 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2008
+   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/>.  */
+
+struct One
+{
+  int x;
+};
+
+struct Two
+{
+  struct One one;
+  int x, y;
+};
+
+struct Two two = { { 1 }, 2, 3 };
+
+typedef struct One tOne;
+typedef struct Two tTwo;
+
+tOne *onep = &two.one;
+tTwo *twop = &two;
+
+int main()
+{
+  onep->x = twop->y;
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.base/structs3.exp b/gdb/testsuite/gdb.base/structs3.exp
new file mode 100644
index 0000000..bec93b6
--- /dev/null
+++ b/gdb/testsuite/gdb.base/structs3.exp
@@ -0,0 +1,37 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2008 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/>.
+
+set testfile "structs3"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+if { [prepare_for_testing structs3.exp "structs3" "" {debug}] } {
+    return -1
+}
+
+set vhn "\\$\[0-9\]+"
+
+# Check the real contents.
+gdb_test "print two" "$vhn = {one = {x = 1}, x = 2, y = 3}"
+
+# Check through the pointer.
+gdb_test "print *twop" "$vhn = {one = {x = 1}, x = 2, y = 3}"
+
+# Check through a pointer to a smaller type, casted up.
+gdb_test "print *(struct Two *)onep" "$vhn = {one = {x = 1}, x = 2, y = 3}"
+
+gdb_test "print *(tTwo *)onep" "$vhn = {one = {x = 1}, x = 2, y = 3}"