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core: Don't call into the runtime to reserve if we have capacity

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Brian Anderson 2012-03-28 23:18:36 -07:00
parent c0a99790cb
commit b7b66b6cb3
2 changed files with 7 additions and 2 deletions
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4
src/libcore/str.rs
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@ -1504,7 +1504,9 @@ capacity, then no action is taken.
* n - The number of bytes to reserve space for
"]
fn reserve(&s: str, n: uint) {
rustrt::str_reserve_shared(s, n);
if capacity(s) < n {
rustrt::str_reserve_shared(s, n);
}
}
#[doc = "