--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pragma-pack-3.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,28 @@
+/* PR c++/25294 */
+/* { dg-options "-std=gnu99" } */
+/* Epiphany makes struct S 8-byte aligned.  */
+/* { dg-do run { target { ! epiphany-*-* } } } */
+
+extern void abort (void);
+
+struct S
+{
+  char a[3];
+#pragma pack(1) /* A block comment
+		   that ends on the next line.  */
+  struct T
+  {
+    char b;
+    int c;
+  } d;
+#pragma pack /*/ */ () // C++ comment
+  int e;
+} s;
+
+int
+main ()
+{
+  if (sizeof (int) == 4 && sizeof (s) != 12)
+    abort ();
+  return 0;
+}