Re: lib/47055: libc diagassert issues

[christos%zoulas.com@localhost (Christos Zoulas)]

The following reply was made to PR lib/47055; it has been noted by GNATS.

From: christos%zoulas.com@localhost (Christos Zoulas)
To: gnats-bugs%NetBSD.org@localhost, lib-bug-people%netbsd.org@localhost, 
        gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Cc: 
Subject: Re: lib/47055: libc diagassert issues
Date: Wed, 10 Oct 2012 18:45:29 -0400

 On Oct 10,  7:45pm, dholland%NetBSD.org@localhost 
(dholland%NetBSD.org@localhost) wrote:
 -- Subject: lib/47055: libc diagassert issues
 
 | 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.
 
 This is a bug. I am fixing and versioning syslog(). Syslog should be
 thread-safe, and because of the static hostname (and the initialiazation
 of it, it is not).
 
 christos