allow variable arguments in LOG functions to be omitted or empty.

If the variable arguments are omitted or empty, the '##' operator
causes the preprocessor to remove the comma before it.

diff --git a/para.h b/para.h
index ed2c0bccae649368e1530680dac6e90373127674..c84685d9940ffafa3213be1bd64c672d119fca8e 100644 (file)
--- a/para.h
+++ b/para.h
@@ -67,43 +67,43 @@
 #define COMPILE_TIME_LOGLEVEL 0
 
 #if DEBUG > COMPILE_TIME_LOGLEVEL
-#define PARA_DEBUG_LOG(f,...) para_log(DEBUG, "%s: " f, __FUNCTION__, __VA_ARGS__)
+#define PARA_DEBUG_LOG(f,...) para_log(DEBUG, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
 #else
 #define PARA_DEBUG_LOG(...) do {;} while (0)
 #endif
 
 #if INFO > COMPILE_TIME_LOGLEVEL
-#define PARA_INFO_LOG(f,...) para_log(INFO, "%s: " f, __FUNCTION__, __VA_ARGS__)
+#define PARA_INFO_LOG(f,...) para_log(INFO, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
 #else
 #define PARA_INFO_LOG(...) do {;} while (0)
 #endif
 
 #if NOTICE > COMPILE_TIME_LOGLEVEL
-#define PARA_NOTICE_LOG(f,...) para_log(NOTICE, "%s: " f, __FUNCTION__, __VA_ARGS__)
+#define PARA_NOTICE_LOG(f,...) para_log(NOTICE, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
 #else
 #define PARA_NOTICE_LOG(...) do {;} while (0)
 #endif
 
 #if WARNING > COMPILE_TIME_LOGLEVEL
-#define PARA_WARNING_LOG(f,...) para_log(WARNING, "%s: " f, __FUNCTION__, __VA_ARGS__)
+#define PARA_WARNING_LOG(f,...) para_log(WARNING, "%s: " f, __FUNCTION__, ##  __VA_ARGS__)
 #else
 #define PARA_WARNING_LOG(...) do {;} while (0)
 #endif
 
 #if ERROR > COMPILE_TIME_LOGLEVEL
-#define PARA_ERROR_LOG(f,...) para_log(ERROR, "%s: " f, __FUNCTION__, __VA_ARGS__)
+#define PARA_ERROR_LOG(f,...) para_log(ERROR, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
 #else
 #define PARA_ERROR_LOG(...) do {;} while (0)
 #endif
 
 #if CRIT > COMPILE_TIME_LOGLEVEL
-#define PARA_CRIT_LOG(f,...) para_log(CRIT, "%s: " f, __FUNCTION__, __VA_ARGS__)
+#define PARA_CRIT_LOG(f,...) para_log(CRIT, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
 #else
 #define PARA_CRIT_LOG(...) do {;} while (0)
 #endif
 
 #if EMERG > COMPILE_TIME_LOGLEVEL
-#define PARA_EMERG_LOG(f,...) para_log(EMERG, "%s: " f, __FUNCTION__, __VA_ARGS__)
+#define PARA_EMERG_LOG(f,...) para_log(EMERG, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
 #else
 #define PARA_EMERG_LOG(...)
 #endif