--- ./lib/fseterr.c.orig 2014-03-09 09:46:03.000000000 -0500 +++ ./lib/fseterr.c 2018-09-18 18:51:50.403063936 -0500 @@ -29,7 +29,7 @@ /* Most systems provide FILE as a struct and the necessary bitmask in , because they need it for implementing getc() and putc() as fast macros. */ -#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */ +#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */ fp->_flags |= _IO_ERR_SEEN; #elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */ fp_->_flags |= __SERR;