File tls-dtor-list-mangling.patch of Package glibc.i686.4896

Overview Repositories Revisions Requests Users Attributes Meta

File tls-dtor-list-mangling.patch of Package glibc.i686.4896

2015-10-06  Florian Weimer  <fweimer@redhat.com>

[BZ #19018]
	* stdlib/cxa_thread_atexit_impl.c (__cxa_thread_atexit_impl):
	Mangle function pointer before storing it.
	(__call_tls_dtors): Demangle function pointer before calling it.

Index: glibc-2.22/stdlib/cxa_thread_atexit_impl.c
===================================================================
--- glibc-2.22.orig/stdlib/cxa_thread_atexit_impl.c
+++ glibc-2.22/stdlib/cxa_thread_atexit_impl.c
@@ -98,6 +98,10 @@ static __thread struct link_map *lm_cach
 int
 __cxa_thread_atexit_impl (dtor_func func, void *obj, void *dso_symbol)
 {
+#ifdef PTR_MANGLE
+  PTR_MANGLE (func);
+#endif
+
   /* Prepend.  */
   struct dtor_list *new = calloc (1, sizeof (struct dtor_list));
   new->func = func;
@@ -142,9 +146,13 @@ __call_tls_dtors (void)
   while (tls_dtor_list)
     {
       struct dtor_list *cur = tls_dtor_list;
+      dtor_func func = cur->func;
+#ifdef PTR_DEMANGLE
+      PTR_DEMANGLE (func);
+#endif
 
       tls_dtor_list = tls_dtor_list->next;
-      cur->func (cur->obj);
+      func (cur->obj);
 
       /* Ensure that the MAP dereference happens before
 	 l_tls_dtor_count decrement.  That way, we protect this access from a

Places

File tls-dtor-list-mangling.patch of Package glibc.i686.4896

Places