Make removeSubtypes resilient to reentry#3071
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JsonFreeman merged 3 commits intorelease-1.5from May 7, 2015
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Explain further that the stack is used to detect when subtype reduction is currentlytaking place for a given union type.
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// Since removeSubtypes checks the subtype relation, and the subtype relation on a union
// may attempt to reduce a union, it is possible that removeSubtypes could be called
// recursively on the same set of types. The removeSubtypesStack is used to track which
// sets of types are currently undergoing subtype reduction.
…into removeSubtypesRecursion
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Since we have a tendency to add related tests with similar names, in the future suffix test names with 👍 |
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Make removeSubtypes resilient to reentry
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Fixes #2997