diff options
Diffstat (limited to 'library/alloc/src/vec/mod.rs')
| -rw-r--r-- | library/alloc/src/vec/mod.rs | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/library/alloc/src/vec/mod.rs b/library/alloc/src/vec/mod.rs index cbb5b0627b7..3dc8a4fbba8 100644 --- a/library/alloc/src/vec/mod.rs +++ b/library/alloc/src/vec/mod.rs @@ -489,8 +489,10 @@ impl<T> Vec<T> { /// * `length` needs to be less than or equal to `capacity`. /// /// Violating these may cause problems like corrupting the allocator's - /// internal data structures. For example it is **not** safe - /// to build a `Vec<u8>` from a pointer to a C `char` array with length `size_t`. + /// internal data structures. For example it is normally **not** safe + /// to build a `Vec<u8>` from a pointer to a C `char` array with length + /// `size_t`, doing so is only safe if the array was initially allocated by + /// a `Vec` or `String`. /// It's also not safe to build one from a `Vec<u16>` and its length, because /// the allocator cares about the alignment, and these two types have different /// alignments. The buffer was allocated with alignment 2 (for `u16`), but after |