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Use Vec::with_capacity when we know the eventual size of the Vec.

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Dan Gohman
2019-01-02 11:59:57 -08:00
parent 29edc3fe50
commit cd4f96c066
1 changed files with 1 additions and 1 deletions
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2
lib/wasm/src/sections_translator.rs
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@@ -255,7 +255,7 @@ pub fn parse_element_section<'data>(
ref s => panic!("unsupported init expr in element section: {:?}", s), ref s => panic!("unsupported init expr in element section: {:?}", s),
}; };
let items_reader = items.get_items_reader()?; let items_reader = items.get_items_reader()?;
let mut elems = Vec::new(); let mut elems = Vec::with_capacity(cast::usize(items_reader.get_count()));
for item in items_reader { for item in items_reader {
let x = item?; let x = item?;
elems.push(FuncIndex::from_u32(x)); elems.push(FuncIndex::from_u32(x));