--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pack-test-2.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,25 @@
+/* Tests for syntax checking of #pragma pack.
+   Contributed by Mike Coleman <mcoleman2@kc.rr.com> */
+
+/* { dg-do compile } */
+
+#pragma pack(pop)               /* { dg-warning "without matching" } */
+
+#pragma pack(push)
+#pragma pack(pop)               /* reset */
+
+#pragma pack(push, foo, 1)
+#pragma pack(pop, foo, 1)       /* { dg-warning "malformed" } (/
+#pragma pack(pop)               /* reset */
+
+#pragma pack(push, foo, 1)
+#pragma pack(pop, bar)          /* { dg-warning "without matching" } */
+#pragma pack(pop)               /* reset */
+
+#pragma pack(push, foo, 1)
+#pragma pack(pop)
+#pragma pack(pop, foo)          /* { dg-warning "without matching" } */
+
+#pragma pack(push, foo, 3)      /* { dg-warning "small power of two" } */
+
+extern int blah;	/* prevent "ISO C forbids an empty translation unit" */