darwin-crt3.c (atexit): Pass &__dso_handle rather than NULL for dso parameter to atexit_common.

	* config/darwin-crt3.c (atexit): Pass &__dso_handle rather than
	NULL for dso parameter to atexit_common.

From-SVN: r112692

gcc/ChangeLog

+2006-04-04  Geoffrey Keating  <geoffk@apple.com>
+
+	* config/darwin-crt3.c (atexit): Pass &__dso_handle rather than
+	NULL for dso parameter to atexit_common.
+
 2006-04-04  Eric Christopher  <echristo@apple.com>
 
 	* config/i386/i386.c (machopic_output_stub): Output \t

gcc/config/darwin-crt3.c

@@ -518,11 +518,15 @@ __cxa_atexit (cxa_atexit_callback func, void* arg, const void* dso)
 
 int atexit (atexit_callback func) __attribute__((visibility("hidden")));
 
+/* Use __dso_handle to allow even bundles that call atexit() to be unloaded
+   on 10.4.  */
+extern void __dso_handle;
+
 int
 atexit (atexit_callback func)
 {
   struct one_atexit_routine r;
   r.callback.ac = func;
   r.has_arg = 0;
-  return atexit_common (&r, NULL);
+  return atexit_common (&r, &__dso_handle);
 }