ruby_debug_print_node  146 compile.c         (ruby_debug_print_node(1, CPDEBUG, "", (NODE *)(node)), gl_node_level)), \
ruby_debug_print_node   23 vm_debug.h     #define dpn(n)   ruby_debug_print_node(-1, 0, "", (n))
ruby_debug_print_node   29 vm_debug.h     NODE *ruby_debug_print_node(int level, int debug_level, const char *header, const NODE *node);