when url as value field,sometimes token.data.scalar.value will get "\0"

[maczh]

file test.yml
test:
url: http://127.0.0.1:8080/test

I do many times to try get test.url value, sometimes I got it, but sometimes the token.data.scalar.value="\0",but token.data.scalar.length=26, does somebody fixed it?
And I try to change yml file to:

test:
url: "http://127.0.0.1:8080/test"

But it does not work. the same bug found.

[perlpunk]

Can you please provide some reproducing C code? thanks