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Fix undefined behavior in regex_macros #201

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Merged
BurntSushi merged 1 commit into from
Apr 15, 2016
Merged

Fix undefined behavior in regex_macros #201

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Avoid undefined behavior from reading uninitialized data
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@Amanieu
Amanieu committed Apr 15, 2016
commit 62cedef3ee7021ce0fc476c2a96ebc9aa0e90515
2 changes: 1 addition & 1 deletion regex_macros/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -309,7 +309,7 @@ fn exec<'t>(

#[inline]
fn contains(&self, pc: usize) -> bool {
let s = self.sparse[pc];
let s = unsafe { ::std::ptr::read_volatile(&self.sparse[pc]) };
s < self.size && self.dense[s].pc == pc
}

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