From f586e1328681b400078c995a0bb6ad301ef73549 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Tue, 6 Oct 2015 13:12:36 +0200 Subject: Harden tls_dtor_list with pointer mangling [BZ #19018] --- stdlib/cxa_thread_atexit_impl.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'stdlib') diff --git a/stdlib/cxa_thread_atexit_impl.c b/stdlib/cxa_thread_atexit_impl.c index 2d5d56a7fa..5717f09e76 100644 --- a/stdlib/cxa_thread_atexit_impl.c +++ b/stdlib/cxa_thread_atexit_impl.c @@ -98,6 +98,10 @@ static __thread struct link_map *lm_cache; 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 -- cgit v1.2.3