Re: [naviserver-devel] Crash in x64 mode in Ns_Log

[Gustaf N. <ne...@wu...>]

be sure to terminate va_* argument lists with NULL (or to be on the safe 
side
with  (char*)NULL) and not with 0. when you have sizeof(int) != 
sizeof(char *),
the compiler will put a 32bit  for 0, a comparison with a 64bit null 
pointer
will fail. I am pretty sure, the vsnprintf()  tries to write an error 
message....
and misses the end of the var arg list....

-gustaf neumann

PS: fixed a similar issue in xotcl more than a year ago.

Vlad Seryakov schrieb:
> Hi,
>
> This is an example when it crashes inside vsnprintf, experimenting i 
> found  that issuing long unknown command crashes as well. In my case i 
> noticed that trying to log long lines does not work as well. In x32 
> everything works fine
>
> db:vlad[18:01:19]#uname -a
> Linux db 2.6.22-ARCH #1 SMP PREEMPT Thu Oct 4 11:47:51 EDT 2007 x86_64 
> Intel(R) Xeon(R) CPU           X5355  @ 2.66GHz GenuineIntel GNU/Linux
>
>
> ossweb:nscp 1>
> ossweb:nscp 1> aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
>
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