> and in gdb, if you use "macro expand NCR", does it work? It just gives: (gdb) macro expand NCR expands to: NCR but I think we're getting closer. "info macro NCR" gives: (gdb) info macro NCR The symbol `NCR' has no definition as a C/C++ preprocessor macro at /usr/include/stdlib.h:-1 with both GNU gdb Red Hat Linux (6.1post-1.20040607.43rh) and GNU gdb 6.3.90-20051104-cvs GDB is looking in the wrong place, but does GCC tell it where to look? Nick
