_GL_ATTRIBUTE_NODISCARD 831 include/config.h # define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] _GL_ATTRIBUTE_NODISCARD 833 include/config.h # define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__)) _GL_ATTRIBUTE_NODISCARD 835 include/config.h # define _GL_ATTRIBUTE_NODISCARD