Author: kib
Date: Thu Feb 26 09:42:03 2015
New Revision: 279318
URL: https://svnweb.freebsd.org/changeset/base/279318
Log:
Check that the pointer to the thread return value is not NULL before
dereferencing. NULL is allowed by C11 and must be handled.
Reported and tested by: Vineela <vineela...@yahoo.com>
PR: 198038
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/lib/libstdthreads/thrd.c
Modified: head/lib/libstdthreads/thrd.c
==============================================================================
--- head/lib/libstdthreads/thrd.c Thu Feb 26 09:31:25 2015
(r279317)
+++ head/lib/libstdthreads/thrd.c Thu Feb 26 09:42:03 2015
(r279318)
@@ -108,7 +108,8 @@ thrd_join(thrd_t thr, int *res)
if (pthread_join(thr, &value_ptr) != 0)
return (thrd_error);
- *res = (intptr_t)value_ptr;
+ if (res != NULL)
+ *res = (intptr_t)value_ptr;
return (thrd_success);
}
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