-bash-3.2$ cat 0.c #if __INCLUDE_LEVEL__ < N #include "0.c" #include "0.c" #endif #if __INCLUDE_LEVEL__ == 0 int main() { } #endif -bash-3.2$ gcc -DN=20 0.c -bash-3.2$ gcc -DN=30 0.c
虐待gcc
原文：http://my.oschina.net/2bit/blog/389503
