limit From impl to LengthAtMost32

Co-Authored-By: Mazdak Farrokhzad <twingoow@gmail.com>
2020-01-31 11:41:19 -05:00 · 2020-01-31 11:41:19 -05:00 · f267d9dc19
parent daeb8ece8c
commit f267d9dc19
1 changed files with 4 additions and 1 deletions
--- a/src/liballoc/vec.rs
+++ b/src/liballoc/vec.rs
@ -2398,7 +2398,10 @@ impl<T: Clone> From<&mut [T]> for Vec<T> {
 }

 #[stable(feature = "vec_from_array", since = "1.42.0")]
-impl<T, const N: usize> From<[T; N]> for Vec<T> {
+impl<T, const N: usize> From<[T; N]> for Vec<T>
+where
+    [T; N]: LengthAtMost32,
+{
    fn from(arr: [T; N]) -> Self {
        <[T]>::into_vec(box arr)
    }