toDouble/toLong uses Exception for control flow when there are leading zeros in the decimal

[quom]

String json = "{'key':'1.056'}".replace("'", "\"");
final Any any = JsonIterator.deserialize(json);
any.get("key").toDouble();

Throws a JsonException from the JsonIterator class reportError method creating lots of garbage with the string building. This exception is then eaten up and it reverts back to Double.valueOf().

Is there a reason why an exception is thrown if you try and read a long with leading zeros?

[quom]

I found adding this helper method in IterImpl and calling it only from the readDouble method fixes the problem:

private static final long readFractionOfDouble(final JsonIterator iter, final byte c) throws IOException {
        int ind = IterImplNumber.intDigits[c];
        while (ind == 0) {
            ind = IterImplNumber.intDigits[iter.buf[iter.head++]];
        }
        return readLong(iter, iter.buf[iter.head - 1]);
    }