- uint64_t (*filter)(void *filter_data,
- struct lttng_probe_ctx *lttng_probe_ctx,
- const char *filter_stack_data);
+ union {
+ uint64_t (*filter)(void *filter_data,
+ struct lttng_probe_ctx *lttng_probe_ctx,
+ const char *filter_stack_data);
+ } interpreter_funcs;