_GL_ATTRIBUTE_NODISCARD 851 include/config.h # define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] _GL_ATTRIBUTE_NODISCARD 853 include/config.h # define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__)) _GL_ATTRIBUTE_NODISCARD 855 include/config.h # define _GL_ATTRIBUTE_NODISCARD