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lib/47055: libc diagassert issues
>Synopsis: libc diagassert issues
>Arrival-Date: Wed Oct 10 19:45:00 +0000 2012
>Originator: David A. Holland
>Release: NetBSD 6.99.12 (20121010)
There are two problems with libc diagassert:
(1) it calls syslog() blindly, so if an assertion happens in a program
that hasn't called openlog(), it ends up using uninitialized state in
syslog.c. The observable effect of this seems to be to issue syslog
messages with no hostname field; however, it could be (or become,
without much notice) a good deal worse.
(2) it isn't thread-safe. It frob a global variable (diagassert_flags)
without locking. It also should probably be using syslog_r() rather
Build kde4, look at the resulting syslog spam. Then review the code.
Probably needs discussion.
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