#ifndef cg_dfn_h #define cg_dfn_h /* * Flags which mark a symbol as topologically ``busy'' or as * topologically ``not_numbered'': */ #define DFN_BUSY -1 #define DFN_NAN 0 /* * Depth-first numbering of a call-graph. */ extern void cg_dfn (Sym * root); #endif /* cg_dfn_h */