Fix strict ISO-C compatibility for ust-tracepoint-event.h public header

../../include/lttng/ust-tracepoint-event.h:328:23: warning: ISO C does not permit named variadic macros [-Wvariadic-macros]

Use ... and __VA_ARGS__ instead of args... and args.

This enables ISO-C compability for the tracepoint headers for program
instrumentation. Note that the probes need to be built _without_ strict
C99 flags (they require gnu extensions).

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/include/lttng/ust-tracepoint-event.h b/include/lttng/ust-tracepoint-event.h
index c2e951928ce99bab360dfa7a52f813993e90b46f..28ac8d8075dc71a7518a43148d0bc746a5bd3715 100644 (file)
--- a/include/lttng/ust-tracepoint-event.h
+++ b/include/lttng/ust-tracepoint-event.h
@@ -204,7 +204,7 @@ static const char                                                   \
        },
 
 #undef TP_FIELDS
-#define TP_FIELDS(args...) args        /* Only one used in this phase */
+#define TP_FIELDS(...) __VA_ARGS__     /* Only one used in this phase */
 
 #undef TRACEPOINT_EVENT_CLASS
 #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields)                            \
@@ -224,7 +224,7 @@ static const char                                                   \
 #include <lttng/ust-tracepoint-event-reset.h>
 
 #undef TP_ARGS
-#define TP_ARGS(args...) args
+#define TP_ARGS(...) __VA_ARGS__
 
 #undef TRACEPOINT_EVENT_CLASS
 #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields)               \
@@ -271,10 +271,10 @@ static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args));
        __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1;
 
 #undef TP_ARGS
-#define TP_ARGS(args...) args
+#define TP_ARGS(...) __VA_ARGS__
 
 #undef TP_FIELDS
-#define TP_FIELDS(args...) args
+#define TP_FIELDS(...) __VA_ARGS__
 
 #undef TRACEPOINT_EVENT_CLASS
 #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields)      \
@@ -322,10 +322,10 @@ static inline size_t __event_get_size__##_provider##___##_name(size_t *__dynamic
 #define ctf_string(_item, _src)
 
 #undef TP_ARGS
-#define TP_ARGS(args...) args
+#define TP_ARGS(...) __VA_ARGS__
 
 #undef TP_FIELDS
-#define TP_FIELDS(args...) args
+#define TP_FIELDS(...) __VA_ARGS__
 
 #undef TRACEPOINT_EVENT_CLASS
 #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields)             \
@@ -393,10 +393,10 @@ size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args))      \
 #define __get_dynamic_len(field)       __dynamic_len[__dynamic_len_idx++]
 
 #undef TP_ARGS
-#define TP_ARGS(args...) args
+#define TP_ARGS(...) __VA_ARGS__
 
 #undef TP_FIELDS
-#define TP_FIELDS(args...) args
+#define TP_FIELDS(...) __VA_ARGS__
 
 #undef TRACEPOINT_EVENT_CLASS
 #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields)             \
@@ -444,7 +444,7 @@ static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args))\
 #include <lttng/ust-tracepoint-event-reset.h>
 
 #undef TP_ARGS
-#define TP_ARGS(args...) args
+#define TP_ARGS(...) __VA_ARGS__
 
 #define _TP_EXTRACT_STRING2(...)       #__VA_ARGS__