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From: Siddhesh Poyarekar via Libc-alpha <libc-alpha@sourceware.org>
To: libc-alpha@sourceware.org
Subject: [PATCH] __cxa_thread_atexit_impl: Return -1 on allocation failure
Date: Wed, 28 Jul 2021 11:55:22 +0530	[thread overview]
Message-ID: <20210728062522.3904733-1-siddhesh@sourceware.org> (raw)

Return -1 in the unlikely event that allocation fails when trying to
register a TLS destructor.
---
 stdlib/cxa_thread_atexit_impl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/stdlib/cxa_thread_atexit_impl.c b/stdlib/cxa_thread_atexit_impl.c
index 577ed30931..e956f4d804 100644
--- a/stdlib/cxa_thread_atexit_impl.c
+++ b/stdlib/cxa_thread_atexit_impl.c
@@ -72,6 +72,7 @@
    is not very different from a case where __call_tls_dtors is called after
    _dl_close_worker on the DSO and hence is an accepted execution.  */
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <ldsodefs.h>
 
@@ -104,6 +105,8 @@ __cxa_thread_atexit_impl (dtor_func func, void *obj, void *dso_symbol)
 
   /* Prepend.  */
   struct dtor_list *new = calloc (1, sizeof (struct dtor_list));
+  if (__glibc_unlikely (new == NULL))
+    return -1;
   new->func = func;
   new->obj = obj;
   new->next = tls_dtor_list;
-- 
2.31.1


             reply	other threads:[~2021-07-28  6:26 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-28  6:25 Siddhesh Poyarekar via Libc-alpha [this message]
2021-07-28  7:14 ` [PATCH] __cxa_thread_atexit_impl: Return -1 on allocation failure Florian Weimer via Libc-alpha
2021-07-28  7:26   ` Siddhesh Poyarekar via Libc-alpha
2021-07-28  7:59 ` Andreas Schwab

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