The FCGI module contains the following code:

THREADS_ALLOW(); ret = FCGX_Accept_r(THIS->request); THREADS_DISALLOW();

This works fine normally, but if pike was compiled --with-debug, then HIDE_GLOBAL_VARIABLES() is defined which sets int Pike_interpreter =0; which in turn means THIS is no longer valid and you get:

./FCGI.cmod:157: error: request for member `frame_pointer' in something not a structure or union

Adam