weak. If the multi-threaded application includes iostream.h,
gthr-posix.h is included and pthread_create will be defined weak.
If pthead_create is weak its defining module in libc is not
- necessarly included in the link and the symbol is resolved to zero.
+ necessarily included in the link and the symbol is resolved to zero.
Therefore the first call to it will crash.
Since -mthreads is a multilib switch on LynxOS we know that at this