rb_io_stdio_file  651 ext/fiddle/pointer.c 	fp = rb_io_stdio_file(fptr);
rb_io_stdio_file  377 ext/objspace/objspace_dump.c 	dc->stream = rb_io_stdio_file(fptr);
rb_io_stdio_file  128 include/ruby/io.h FILE *rb_io_stdio_file(rb_io_t *fptr);