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#include <stdio.h>
#define ERR(fmt, args...) fprintf(stderr, fmt, ## args)
#define DBG2(fmt, args...) fprintf(stderr, "%s:%-5d: " fmt, __FUNCTION__, __LINE__, ## args)
#define ENTER2 do { fprintf(stderr, "%s:%-5d: ENTER\n", __FUNCTION__, __LINE__); } while(0)
#define RET2(args...) do { fprintf(stderr, "%s:%-5d: RETURN\n", __FUNCTION__, __LINE__);\
return args; } while(0)
#ifdef DBG
#define ENTER do { fprintf(stderr, "%s:%-5d: ENTER\n", __FUNCTION__, __LINE__); } while(0)
#define RET(args...) do { fprintf(stderr, "%s:%-5d: RETURN\n", __FUNCTION__, __LINE__);\
return args; } while(0)
#define DBG(fmt, args...) fprintf(stderr, "%s:%-5d: " fmt, __FUNCTION__, __LINE__, ## args)
#else
#define ENTER do { } while(0)
#define RET(args...) return args;
#define DBG(fmt, args...) do { } while(0)
#endif
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