--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr37908.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,25 @@
+/* { dg-do run } */
+/* { dg-require-effective-target sync_char_short } */
+/* { dg-options "-Wsync-nand" } */
+/* { dg-options "-Wsync-nand -march=i486" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */
+/* { dg-options "-Wsync-nand -mcpu=v9" { target sparc*-*-* } } */
+
+
+extern void abort (void);
+
+int main (void)
+{
+
+  short xLoc;
+  short xIn, xOut, xExpect, i = 1;
+
+  xLoc = xIn = ~ (1 << i);
+  xExpect = ~ (xIn & 0x7F);
+
+  xOut = __sync_nand_and_fetch (&xLoc, 0x7F); /* { dg-message "note: '__sync_nand_and_fetch' changed semantics in GCC 4.4" } */
+
+  if (xOut != xExpect)
+    abort ();
+
+  return 0;
+}