* gcc.dg/980709-1.c: New test.

From-SVN: r21018

gcc/testsuite/ChangeLog

+Thu Jul  9 00:38:51 1998  Jeffrey A Law  (law@cygnus.com)
+
+	* gcc.dg/980709-1.c: New test.
+
 Tue Jul  7 13:41:27 1998  Richard Henderson  <rth@cygnus.com>
 
 	* gcc.c-torture/execute/bcp-1.c: New test.

gcc/testsuite/gcc.dg/980709-1.c

+/* { dg-do compile { target i?86-*-* } } */
+/* { dg-options -O2 } */
+
+extern __inline__ int test_and_set_bit(int nr, volatile void * addr)
+{
+	int oldbit;
+	__asm__ __volatile__( "" 
+		"btsl %2,%1\n\tsbbl %0,%0"
+		:"=r" (oldbit),"=m" (addr)
+		:"ir" (nr));
+	return oldbit;
+}
+struct buffer_head {
+	unsigned long b_state;		 
+};
+extern void lock_buffer(struct buffer_head * bh)
+{
+	while (test_and_set_bit(2 , &bh->b_state))
+		__wait_on_buffer(bh);
+}