__warn_unused_result__ 830 include/config.h # define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__)) __warn_unused_result__ 404 maint/gnulib/lib/cdefs.h #if __GNUC_PREREQ (3,4) || __glibc_has_attribute (__warn_unused_result__) __warn_unused_result__ 406 maint/gnulib/lib/cdefs.h __attribute__ ((__warn_unused_result__))