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[dev.typeparams] go/types: fix the type parameter index in applyTypeFunc
We should preserve type parameter indices when transforming them using applyTypeFunc. Change-Id: Ib75f5cf1a146bd7e6850368fa954c1affcba3ad1 Reviewed-on: https://go-review.googlesource.com/c/go/+/327269 Trust: Robert Findley <rfindley@google.com> Run-TryBot: Robert Findley <rfindley@google.com> Reviewed-by: Robert Griesemer <gri@golang.org> TryBot-Result: Go Bot <gobot@golang.org>
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@ -802,7 +802,7 @@ func (check *Checker) applyTypeFunc(f func(Type) Type, x Type) Type {
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// type param is placed in the current package so export/import
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// works as expected.
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tpar := NewTypeName(nopos, check.pkg, "<type parameter>", nil)
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ptyp := check.NewTypeParam(tpar, 0, &emptyInterface) // assigns type to tpar as a side-effect
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ptyp := check.NewTypeParam(tpar, tp.index, &emptyInterface) // assigns type to tpar as a side-effect
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tsum := newUnion(rtypes, tildes)
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ptyp.bound = &Interface{complete: true, tset: &TypeSet{types: tsum}}
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@ -806,7 +806,7 @@ func (check *Checker) applyTypeFunc(f func(Type) Type, x Type) Type {
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// type param is placed in the current package so export/import
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// works as expected.
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tpar := NewTypeName(token.NoPos, check.pkg, "<type parameter>", nil)
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ptyp := check.NewTypeParam(tpar, 0, &emptyInterface) // assigns type to tpar as a side-effect
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ptyp := check.NewTypeParam(tpar, tp.index, &emptyInterface) // assigns type to tpar as a side-effect
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tsum := newUnion(rtypes, tildes)
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ptyp.bound = &Interface{complete: true, tset: &TypeSet{types: tsum}}
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