WARN_UNUSED_RESULT   42 internal.h     #define WARN_UNUSED_RESULT(x) x __attribute__((__warn_unused_result__))
WARN_UNUSED_RESULT   44 internal.h     #define WARN_UNUSED_RESULT(x) x __attribute__((__warn_unused_result__))
WARN_UNUSED_RESULT   46 internal.h     #define WARN_UNUSED_RESULT(x) x