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fix ptr invalidation in Vec::truncate

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This commit is contained in:
Ralf Jung 2020-03-30 10:40:59 +02:00
parent 86c1c43420
commit fa6c883074
1 changed files with 2 additions and 1 deletions
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3
src/liballoc/vec.rs
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@ -739,7 +739,8 @@ impl<T> Vec<T> {
if len > self.len { if len > self.len {
return; return;
} }
let s = self.get_unchecked_mut(len..) as *mut _; let remaining_len = self.len - len;
let s = slice::from_raw_parts_mut(self.as_mut_ptr().add(len), remaining_len);
self.len = len; self.len = len;
ptr::drop_in_place(s); ptr::drop_in_place(s);
} }