--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pragma-align.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,47 @@
+/* Prove that pragma alignment handling works somewhat. */
+
+/* { dg-do run { target { ! default_packed } } } */
+
+extern void abort (void);
+
+struct {
+        char one;
+        long two;
+} defaultalign;
+
+#if defined(__LP64__)
+#pragma pack(8)
+#else
+#pragma pack(4)
+#endif
+struct {
+        char one;
+        long two;
+} sixteen;
+
+#pragma pack(1)
+struct {
+        char one;
+        long two;
+} two;
+
+#pragma pack(2)
+struct {
+        char one;
+        long two;
+} three;
+
+#pragma pack()
+struct {
+        char one;
+        long two;
+} resetalign;
+
+main()
+{
+        if(sizeof(sixteen) < sizeof(defaultalign)) abort();
+        if(sizeof(two) >= sizeof(defaultalign)) abort();
+        if(sizeof(three) <= sizeof(two)) abort();
+        if(sizeof(resetalign) != sizeof(defaultalign)) abort();
+	return 0;
+}