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cmd/compile: unified IR support for implicit interfaces

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Change-Id: Ibdaa0750f7bc47b513c047fdf4b7145ebba9e870
Reviewed-on: https://go-review.googlesource.com/c/go/+/386001
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Matthew Dempsky 2022-02-01 17:41:46 -08:00
parent 7c151f3280
commit 21998413ad
3 changed files with 17 additions and 1 deletions
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src/cmd/compile/internal/noder/reader.go
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@ -449,6 +449,8 @@ func (r *reader) interfaceType() *types.Type {
tpkg := types.LocalPkg // TODO(mdempsky): Remove after iexport is gone.
nmethods, nembeddeds := r.Len(), r.Len()
implicit := nmethods == 0 && nembeddeds == 1 && r.Bool()
assert(!implicit) // implicit interfaces only appear in constraints
fields := make([]*types.Field, nmethods+nembeddeds)
methods, embeddeds := fields[:nmethods], fields[nmethods:]