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Fix doc of ConstraintHandling#approximation #9022

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May 22, 2020
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Fix doc of ConstraintHandling#approximation #9022

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6 changes: 3 additions & 3 deletions compiler/src/dotty/tools/dotc/core/ConstraintHandling.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -243,10 +243,10 @@ trait ConstraintHandling[AbstractContext] {
/** Solve constraint set for given type parameter `param`.
* If `fromBelow` is true the parameter is approximated by its lower bound,
* otherwise it is approximated by its upper bound, unless the upper bound
* contains a reference to the parameter itself (`addOneBound` ensures that
* such reference never occur in the lower bound).
* contains a reference to the parameter itself (such occurrences can arise
* for F-bounded types, `addOneBound` ensures that they never occur in the
* lower bound).
* Wildcard types in bounds are approximated by their upper or lower bounds.
* (Such occurrences can arise for F-bounded types).
* The constraint is left unchanged.
* @return the instantiating type
* @pre `param` is in the constraint's domain.
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