1#ifndef cg_dfn_h 2#define cg_dfn_h 3 4/* 5 * Flags which mark a symbol as topologically ``busy'' or as 6 * topologically ``not_numbered'': 7 */ 8#define DFN_BUSY -1 9#define DFN_NAN 0 10 11/* 12 * Depth-first numbering of a call-graph. 13 */ 14 15extern void cg_dfn (Sym * root); 16 17#endif /* cg_dfn_h */ 18