fix ptr invalidation in Vec::truncate
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@ -739,7 +739,8 @@ impl<T> Vec<T> {
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if len > self.len {
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return;
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}
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let s = self.get_unchecked_mut(len..) as *mut _;
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let remaining_len = self.len - len;
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let s = slice::from_raw_parts_mut(self.as_mut_ptr().add(len), remaining_len);
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self.len = len;
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ptr::drop_in_place(s);
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}
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