Cleanup: ust-tracepoint-event.h: extract `__num_fields` in a variable
[lttng-ust.git] / include / lttng / ust-tracepoint-event.h
index 0360bb6c6226ec0e81e780bb0c40b15b0da1fb9d..336125a6c4821507369ae932fd75d14484521bb4 100644 (file)
@@ -781,9 +781,10 @@ void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args))          \
        struct lttng_stack_ctx __lttng_ctx;                                   \
        size_t __event_len, __event_align;                                    \
        size_t __dynamic_len_idx = 0;                                         \
+       const size_t __num_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1; \
        union {                                                               \
-               size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1]; \
-               char __filter_stack_data[2 * sizeof(unsigned long) * (_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1)]; \
+               size_t __dynamic_len[__num_fields];                           \
+               char __filter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \
        } __stackvar;                                                         \
        int __ret;                                                            \
                                                                              \
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