Add a debug_assert to Vec::set_len
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@ -819,6 +819,8 @@ impl<T> Vec<T> {
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#[inline]
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#[stable(feature = "rust1", since = "1.0.0")]
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pub unsafe fn set_len(&mut self, new_len: usize) {
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debug_assert!(new_len <= self.capacity());
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self.len = new_len;
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}
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