new macro FIXNULL.

diff --git a/lib/log.h b/lib/log.h
index 31b99fb..34a8c16 100644 (file)
--- a/lib/log.h
+++ b/lib/log.h
@@ -31,4 +31,6 @@ extern void initLog(char* pLogDir, int fileloglevel, char* servAddr, char* logPo
 extern void logf(const char* logFormat, ...);
 extern void exitLog(void);
 
+#define FIXNULL(a) ((int)(a)?(a):"NULL")
+
 #endif  // __log_h__