__warn_unused_result__  220 opal/include/opal_config_bottom.h #    define __opal_attribute_warn_unused_result__ __attribute__((__warn_unused_result__))
__warn_unused_result__  329 opal/mca/pmix/pmix4x/pmix/src/include/pmix_config_bottom.h #    define __pmix_attribute_warn_unused_result__ __attribute__((__warn_unused_result__))