1 files changed, 76 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.apple/pack-test-1.c b/gcc/testsuite/gcc.apple/pack-test-1.c
new file mode 100644
index 00000000000..10273b2ba27
--- /dev/null
+++ b/gcc/testsuite/gcc.apple/pack-test-1.c
@@ -0,0 +1,76 @@
+/* APPLE LOCAL file 4163069 */
+/* Test semantics of #pragma pack.
+   Contributed by Mike Stump <mrs@apple.com>  */
+
+/* { dg-do run { target *-*-darwin* } } */
+
+#include <stdio.h>
+
+#pragma pack(push, 1)
+struct
+{
+  int a;
+  short b;
+} ShouldBeSixBytes;
+
+#pragma pack(push, 8)
+struct
+{
+  int a;
+  short b;
+} ShouldBeEightBytes;
+
+/* Does a "push" in Apple's standard GCC, should here, too. */
+#pragma pack(push, 4)
+struct
+{
+  char a;
+  short b;
+} ShouldBeFourBytes;
+
+/* Should be popped back to eight bytes.  */
+#pragma pack()
+struct
+{
+  int a;
+  short b;
+} ShouldBeEightBytesToo;
+
+/* Should be popped back to one byte packing.  */
+#pragma pack(pop)
+struct
+{
+  char a;
+  char b;
+  char c;
+} ShouldBeThreeBytes;
+
+/* pop to native packing.  */
+#pragma pack(pop)
+struct
+{
+  char a;
+  short b;
+} ShouldBeFourBytesToo;   /* (well, four bytes on 32-bit PowerPC. YMMV.) */
+
+int nerrs = 0;
+
+static void
+dotest (const char *name, int trueOrFalse)
+{
+  if (! trueOrFalse)
+    ++nerrs;
+  printf ("test %s: %s\n", name, trueOrFalse ? "passed" : "failed");
+}
+
+int main(void)
+{
+  dotest ("push 1", sizeof (ShouldBeSixBytes) == 6);
+  dotest ("push 8", sizeof (ShouldBeEightBytes) == 8);
+  dotest ("push 4", sizeof (ShouldBeFourBytes) == 4);
+  dotest (" pop 8", sizeof (ShouldBeEightBytesToo) == 8);
+  dotest (" pop 1", sizeof (ShouldBeThreeBytes) == 3);
+  dotest (" pop n", sizeof (ShouldBeFourBytesToo) == 4);
+
+  return nerrs;
+}