https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88060
--- Comment #4 from martin <mfe at live dot de> --- Created attachment 45025 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45025&action=edit /usr/include/linux/fcntl.h I found the AT_FDCWD in the file /usr/include/linux/fcntl.h