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Disable distribution of intersection types over applied types #23441
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EugeneFlesselle
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And add minimization
And add minimization
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instead of AppliedType of OrTypes, which relied on the distribution of andTypes over when inheriting multiple context bound companions of the same name
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Fixes soundness issue #23435
Note in particular that this implies we cannot (indirectly) inherit multiple instantiations of the same trait. E.g., see tests/neg/conflicting-inst-basetypes.scala.
The impact on the community-build appears to be rather reasonable, tweaks are required: