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Accommodate arith-overflow in serialize::json numeric parsing.

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This commit is contained in:
Felix S. Klock II 2015-02-19 19:21:53 +01:00
parent c8db89aa82
commit 7c8edabac8
1 changed files with 2 additions and 2 deletions
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4
src/libserialize/json.rs
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@ -1569,8 +1569,8 @@ impl<T: Iterator<Item=char>> Parser<T> {
while !self.eof() {
match self.ch_or_null() {
c @ '0' ... '9' => {
accum *= 10;
accum += (c as u64) - ('0' as u64);
accum = accum.wrapping_mul(10);
accum = accum.wrapping_add((c as u64) - ('0' as u64));
// Detect overflow by comparing to the last value.
if accum <= last_accum { return self.error(InvalidNumber); }