ext/kgio/read_write.c in kgio-2.8.0 vs ext/kgio/read_write.c in kgio-2.8.0.2.g30c1

@@ -107,11 +107,11 @@
 	a->ptr = RSTRING_PTR(a->buf);
 }
 
 static int read_check(struct io_args *a, long n, const char *msg, int io_wait)
 {
-	if (n == -1) {
+	if (n < 0) {
 		if (errno == EINTR) {
 			a->fd = my_fileno(a->io);
 			return -1;
 		}
 		rb_str_set_len(a->buf, 0);
@@ -342,11 +342,11 @@
 static int write_check(struct io_args *a, long n, const char *msg, int io_wait)
 {
 	if (a->len == n) {
 done:
 		a->buf = Qnil;
-	} else if (n == -1) {
+	} else if (n < 0) {
 		if (errno == EINTR) {
 			a->fd = my_fileno(a->io);
 			return -1;
 		}
 		if (errno == EAGAIN) {
@@ -587,10 +587,10 @@
 static int writev_check(struct io_args_v *a, long n, const char *msg, int io_wait)
 {
 	if (n >= 0) {
 		if (n > 0) a->something_written = 1;
 		return trim_writev_buffer(a, n);
-	} else if (n == -1) {
+	} else if (n < 0) {
 		if (errno == EINTR) {
 			a->fd = my_fileno(a->io);
 			return -1;
 		}
 		if (errno == EAGAIN) {