Cleanup: __dynamic_len_idx set but not used warning

__dynamic_len_idx can be set but not used, which causes gcc to
emit a warning. Mark it as possibly unused.

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

diff --git a/probes/lttng-tracepoint-event-impl.h b/probes/lttng-tracepoint-event-impl.h
index e1c408298fea396ceda470dcc12f8a10a735654d..cd7af77639945f3326729fe6a84ea2e038d5fd67 100644 (file)
--- a/probes/lttng-tracepoint-event-impl.h
+++ b/probes/lttng-tracepoint-event-impl.h
@@ -1130,7 +1130,7 @@ static void __event_probe__##_name(void *__data, _proto)                \
        struct lib_ring_buffer_ctx __ctx;                                     \
        ssize_t __event_len;                                                  \
        size_t __event_align;                                                 \
-       size_t __orig_dynamic_len_offset, __dynamic_len_idx;                  \
+       size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \
        union {                                                               \
                size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)];   \
                char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \
@@ -1204,7 +1204,7 @@ static void __event_probe__##_name(void *__data)                        \
        struct lib_ring_buffer_ctx __ctx;                                     \
        ssize_t __event_len;                                                  \
        size_t __event_align;                                                 \
-       size_t __orig_dynamic_len_offset, __dynamic_len_idx;                  \
+       size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \
        union {                                                               \
                size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)];   \
                char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \