[tests] fix stack alignment test on OS/X

1 files changed, 10 insertions, 3 deletions

diff --git a/testsuite/stack_align.c b/testsuite/stack_align.c
index b2c1a69..9772332 100644
--- a/testsuite/stack_align.c
+++ b/testsuite/stack_align.c
@@ -238,14 +238,14 @@ void realign(int align)
 #ifdef HAVE_GCC_ASM
 #ifdef HAVE_I386
   __asm__ __volatile__ (
-      "  sub %%ebx, %%esp\n"
+      "  sub %%edi, %%esp\n"
 #ifdef HAVE_SYMBOL_UNDERSCORE
       "  call _check_class_with_alignment\n"
 #else
       "  call check_class_with_alignment\n"
 #endif
-      "  add %%ebx, %%esp\n"
-      :: "b" (align)
+      "  add %%edi, %%esp\n"
+      :: "D" (align)
   );
 #endif
 #ifdef HAVE_AMD64
@@ -333,6 +333,13 @@ int main (int argc, char *argv[])
 
   oil_init ();
 
+#ifdef __APPLE__
+  /* the dynamic loader on MacOS/X crashes if someone unaligns the stack, so it's
+     unlikely that any code gets away with doing it.  Our test code doesn't get
+     away with it either, so we'll just bail out. */
+  return 0;
+#endif
+
   n = oil_class_get_n_classes ();
   for (i = 0; i < n; i++) {
     OilFunctionClass *klass = oil_class_get_by_index(i);