diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index fd2cfacf8ba..2ef228e86b1 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-11-04  Tom de Vries  <tom@codesourcery.com>
+
+	PR tree-optimization/50763
+	* gcc.dg/pr50763-5.c: New test.
+
 2011-11-04  Tom de Vries  <tom@codesourcery.com>
 
 	PR tree-optimization/50763
diff --git a/gcc/testsuite/gcc.dg/pr50763-5.c b/gcc/testsuite/gcc.dg/pr50763-5.c
new file mode 100644
index 00000000000..e5952d09c86
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr50763-5.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-tail-merge" } */
+
+struct inode
+{
+  unsigned short i_mode;
+  unsigned int i_flags;
+};
+
+static inline int
+is_sxid (unsigned int mode)
+{
+  return (mode & 0004000) || ((mode & 0002000) && (mode & 00010));
+};
+
+void
+gfs2_set_inode_flags (int ip, struct inode *inode)
+{
+  unsigned int flags = inode->i_flags;
+  if ((ip == 0) && !is_sxid (inode->i_mode))
+    inode->i_flags |= 4096;
+  inode->i_flags = flags;
+}