diff --git a/library/std/src/io/mod.rs b/library/std/src/io/mod.rs index c0a72948112..b7b6a9a24c9 100644 --- a/library/std/src/io/mod.rs +++ b/library/std/src/io/mod.rs @@ -556,6 +556,10 @@ where /// therefore, using something that implements [`BufRead`], such as /// [`BufReader`], will be more efficient. /// +/// Repeated calls to the reader use the same cursor, so for example +/// calling `read_to_end` twice on a [`File`] will only return the file's +/// contents once. It's recommended to first call `rewind()` in that case. +/// /// # Examples /// /// [`File`]s implement `Read`: