diff --git a/gdb/testsuite/gdb.base/structs-longest-bitpos.c b/gdb/testsuite/gdb.base/structs-longest-bitpos.c
new file mode 100644
index 0000000..6fb4614
--- /dev/null
+++ b/gdb/testsuite/gdb.base/structs-longest-bitpos.c
@@ -0,0 +1,28 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 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/>.  */
+
+struct foo
+{
+  char buf[0xffff000000];
+  char buf2[2];
+} *f;
+
+int
+main ()
+{
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.base/structs-longest-bitpos.exp b/gdb/testsuite/gdb.base/structs-longest-bitpos.exp
new file mode 100644
index 0000000..ba49518
--- /dev/null
+++ b/gdb/testsuite/gdb.base/structs-longest-bitpos.exp
@@ -0,0 +1,30 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 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/>.
+
+set testfile "structs-longest-bitpos"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+if { [prepare_for_testing structs-longest-bitpos.exp "structs-longest-bitpos" "" {debug}] } {
+    return -1
+}
+
+# The array size should not overflow
+gdb_test "print &f->buf" "= \\(char \\(\\*\\)\\\[1099494850560\\\]\\) 0x0"
+
+# The offset should not overflow
+gdb_test "print &f->buf2" "= \\(char \\(\\*\\)\\\[2\\\]\\) 0xffff000000"