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Check that the pointer to the thread return value is not NULL before

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dereferencing. NULL is allowed by C11 and must be handled.

Reported and tested by:	Vineela <vineela_17@yahoo.com>
PR:	198038
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2015-02-26 09:42:03 +00:00
parent 12fe6c356b
commit 3b2cc6d44e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=279318
1 changed files with 2 additions and 1 deletions
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3
lib/libstdthreads/thrd.c
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@ -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);
}