Hi If you compile the following program #include <windows.h> #include <stdio.h> main () { printf("HW\n"); } with gcc -mno-cygwin -Wmissing-prototypes using cygwin 1.3.1 and w32api as for April 24, 2001, you get the following warning: In file included from /usr/include/w32api/windef.h:145, from /usr/include/w32api/windows.h:98, from zz.c:1: /usr/include/w32api/winnt.h:2503: warning: no previous prototype for `GetCurrentFiber' /usr/include/w32api/winnt.h:2514: warning: no previous prototype for `GetFiberData' To make this compile cleanly I guess prototypes for both functions must be added regards Teun Burgers -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple