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This is a port of CL 290471 to go/types. However, this change preserves the existing check for constant types in recordTypeAndValue, which uses is(..., isConstType) rather than the isConstType predicate. In types2, this code path is not hit with type parameters because convertUntyped walks the type list in order before calling updateExprType with the type parameter, at which point the expression type would have already been recorded as the first element of the type list -- probably something that should be corrected. Longer term, I believe we actually could allow const type parameters if the optype is a sum of constant types. Change-Id: Iaa91ffa740b5f08a5696bd96918a866bffd7aef6 Reviewed-on: https://go-review.googlesource.com/c/go/+/291323 Trust: Robert Findley <rfindley@google.com> Trust: Robert Griesemer <gri@golang.org> Run-TryBot: Robert Findley <rfindley@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org> |
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