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cty: AsBigFloat does a shallow copy #114

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merged 1 commit into from
Aug 17, 2021

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jbardin
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@jbardin jbardin commented Aug 4, 2021

Use Float.Copy in AsBigFloat to ensure that there is no shared data
between the mutable *big.Float and the cty.Value internal state.

Without the Copy, the given test will output:

original value changed from cty.NumberFloatVal(1.9) to cty.NumberIntVal(1)

Use Float.Copy in AsBigFloat to ensure that there is no shared data
between the mutable `*big.Float` and the `cty.Value` internal state.
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Hah, nice catch! I guess callers could (and did) mutate our internal state after all. 🙃

Thanks for fixing this.

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