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[release-branch.go1.19] cmd/compile: fix wrong typeparams for selecto…
…r expr with embedded generic type For selector expression "x.M" where "M" is a promoted method, irgen is using the type of receiver "x" for determining the typeparams for instantiation. However, because M is a promoted method, so its associated receiver is not "x", but "x.T" where "T" is the embedded field of "x". That casues a mismatch when converting non-shape types arguments. Fixing it by using the actual receiver which has the method, instead of using the base receiver. Fixes #54243 Change-Id: I1836fc422d734df14e9e6664d4bd014503960bfc Reviewed-on: https://go-review.googlesource.com/c/go/+/419294 TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-on: https://go-review.googlesource.com/c/go/+/423114 Reviewed-by: Carlos Amedee <carlos@golang.org>
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