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fdb4ec179c
We can totally get there with a negative percentage basis, see comment 0 for an
example.
We could keep the warning like:
NS_WARNING_ASSERTION(clamping_mode == StyleAllowedNumericType::All ||
basis >= 0, "nscoord overflow?");
Which will catch cases where the style system would refuse to parse a negative
<length-percentage>, but we got a negative percent basis, which would be weird.
But that's a bit misleading since right now at least we rely on the caller to do
the appropriate clamping. I also think that NS_WARNING_ASSERTION is not very
useful, since we're not very likely to catch stuff with it. But anyhow, your
call.
Differential Revision: https://phabricator.services.mozilla.com/D22328
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extra : moz-landing-system : lando
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