--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/c-c++-common/Wmultistatement-macros-10.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,82 @@
+/* PR c/80116 */
+/* { dg-options "-Wmultistatement-macros" } */
+/* { dg-do compile } */
+
+#define SWAP(x, y) \
+  tmp = x; /* { dg-warning "macro expands to multiple statements" } */ \
+  x = y; \
+  y = tmp
+
+#define M1	\
+  switch (x) /* { dg-message "not guarded by this 'switch' clause" } */ \
+    case 1:	\
+    SWAP (x, y) /* { dg-message "in expansion of macro .SWAP." } */
+
+#define M2	\
+  switch (x)	\
+    case 1:	\
+    x++
+
+#define M3	\
+  switch (x)	\
+    case 1:	\
+    x++;;
+
+#define M4	\
+  switch (x) /* { dg-message "not guarded by this 'switch' clause" } */ \
+L1:		\
+    case 1:	\
+    SWAP (x, y) /* { dg-message "in expansion of macro .SWAP." } */
+
+#define INC	\
+  x++;;
+
+int x, y, tmp;
+
+void
+fn0 (void)
+{
+  switch (x) /* { dg-message "not guarded by this 'switch' clause" } */
+    case 1:
+      SWAP (x, y); /* { dg-message "in expansion of macro .SWAP." } */
+
+  switch (x) /* { dg-message "not guarded by this 'switch' clause" } */
+    case 1:
+    case 2:
+    case 3:
+    case 4:
+    case 5:
+      SWAP (x, y); /* { dg-message "in expansion of macro .SWAP." } */
+}
+
+void
+fn1 (void)
+{
+  M1; /* { dg-message "in expansion of macro .M1." } */
+  M2;
+  M3;
+  M4; /* { dg-message "in expansion of macro .M4." } */
+  goto L1;
+}
+
+void
+fn2 (void)
+{
+  switch (x)
+    case 1:
+      INC
+
+  switch (x)
+    case 1:
+      ({ x = 10; x++; });
+}
+
+void
+fn3 (void)
+{
+  switch (x)
+    {
+    case 1:
+      SWAP (x, y);
+    }
+}