+
+ if (ckWARN(WARN_IO)) {
+ if ((IoTYPE(io) == IoTYPE_RDONLY) &&
+ (fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
+ Perl_warner(aTHX_ WARN_IO,
+ "Filehandle STD%s opened only for input",
+ (fp == PerlIO_stdout()) ? "OUT" : "ERR");
+ }
+ else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
+ Perl_warner(aTHX_ WARN_IO,
+ "Filehandle STDIN opened only for output");
+ }
+ }
+
+ if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD &&
+ /* FIXME: This next term is a hack to avoid fileno on PerlIO::Scalar */
+ !(num_svs && SvROK(*svp))) {