#include "fts_.h" FTS * xfts_open (char * const *, int options, int (*) (const FTSENT **, const FTSENT **)) _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC (fts_close, 1) _GL_ATTRIBUTE_NONNULL ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL; bool cycle_warning_required (FTS const *fts, FTSENT const *ent) _GL_ATTRIBUTE_NONNULL () _GL_ATTRIBUTE_PURE;