loading multi threaded library into executable enabled for single thread

Barry Andrews titanandrews at gmail.com
Fri Sep 12 11:40:56 UTC 2008

Do you know if this is documented in Release Notes or Known Issues or 



Daniel Eischen wrote:
> On Thu, 11 Sep 2008, Barry Andrews wrote:
>> Hi All,
>> I have a multi-threaded library that is linked against libpthread. 
>> When I
>> load this lib into a tclsh process on FreeBSD, I get this error, 
>> "Recurse on
>> private mutex". and crash. I understand that I can have this issue 
>> when the
>> executable is not linked against libpthread but one of the loaded 
>> libs is.
>> Basically, it thinks it's in single threaded mode.
> This must be an older version of FreeBSD.  I think you must
> link your application (tclsh or whatever) against libpthread
> in order for this to work.  The libc functions won't get properly
> overloaded by their equivalents in libpthread unless you do
> this.

More information about the freebsd-hackers mailing list