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Fix very rare case of false match during join #2515

merged 2 commits into from Mar 9, 2017


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@krlmlr krlmlr commented Mar 9, 2017

Under the following conditions, a false match during a join could have occurred theoretically:

  • Joining an integer and a numeric column
  • Two numeric values have the same integer component but different fractional components, and hash to the same value

It is unlikely that this has been ever observed, but it might be possible to construct an artificial example.

@krlmlr krlmlr requested a review from hadley Mar 9, 2017
@krlmlr krlmlr merged commit d350569 into tidyverse:master Mar 9, 2017
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@krlmlr krlmlr commented Mar 9, 2017

Merging, because further changes depend on this.

@krlmlr krlmlr deleted the b-#2033-fix-lhs-rhs branch Mar 9, 2017
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This old issue has been automatically locked. If you believe you have found a related problem, please file a new issue (with reprex) and link to this issue.

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