File tls-dtor-list-pointer-mangling.patch of Package glibc

Overview Repositories Revisions Requests Users Attributes Meta

File tls-dtor-list-pointer-mangling.patch of Package glibc

2016-07-11  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-2.19/stdlib/cxa_thread_atexit_impl.c
===================================================================
--- glibc-2.19.orig/stdlib/cxa_thread_atexit_impl.c
+++ glibc-2.19/stdlib/cxa_thread_atexit_impl.c
@@ -42,6 +42,10 @@ 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;
@@ -83,9 +87,13 @@ __call_tls_dtors (void)
   while (tls_dtor_list)
     {
       struct dtor_list *cur = tls_dtor_list;
-      tls_dtor_list = tls_dtor_list->next;
+      dtor_func func = cur->func;
+#ifdef PTR_DEMANGLE
+      PTR_DEMANGLE (func);
+#endif
 
-      cur->func (cur->obj);
+      tls_dtor_list = tls_dtor_list->next;
+      func (cur->obj);
 
       __rtld_lock_lock_recursive (GL(dl_load_lock));

Places

File tls-dtor-list-pointer-mangling.patch of Package glibc

Places