diff options
Diffstat (limited to 'library/alloc/src/string.rs')
| -rw-r--r-- | library/alloc/src/string.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs index e97c1637fd5..2272c5b7330 100644 --- a/library/alloc/src/string.rs +++ b/library/alloc/src/string.rs @@ -770,7 +770,10 @@ impl String { /// * The first `length` bytes at `buf` need to be valid UTF-8. /// /// Violating these may cause problems like corrupting the allocator's - /// internal data structures. + /// internal data structures. For example, it is normally **not** safe to + /// build a `String` from a pointer to a C `char` array containing UTF-8 + /// _unless_ you are certain that array was originally allocated by the + /// Rust standard library's allocator. /// /// The ownership of `buf` is effectively transferred to the /// `String` which may then deallocate, reallocate or change the |