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https://github.com/golang/go
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5d6d9f5610
Use types2.Structure() to get single underlying type of typeparams, to handle some unusual cases where a type param is constrained to a single underlying struct or map type. Fixes #48538 Change-Id: I289fb7b31d489f7586f2b04aeb1df74e15a9f965 Reviewed-on: https://go-review.googlesource.com/c/go/+/359335 Trust: Dan Scales <danscales@google.com> Run-TryBot: Dan Scales <danscales@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org>
61 lines
795 B
Go
61 lines
795 B
Go
// compile -G=3
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// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Testing composite literal for a type param constrained to be a struct or a map.
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package p
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type C interface {
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~struct{ b1, b2 string }
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}
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func f[T C]() T {
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return T{
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b1: "a",
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b2: "b",
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}
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}
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func f2[T ~struct{ b1, b2 string }]() T {
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return T{
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b1: "a",
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b2: "b",
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}
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}
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type D interface {
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map[string]string | S
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}
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type S map[string]string
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func g[T D]() T {
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b1 := "foo"
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b2 := "bar"
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return T{
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b1: "a",
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b2: "b",
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}
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}
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func g2[T map[string]string]() T {
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b1 := "foo"
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b2 := "bar"
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return T{
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b1: "a",
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b2: "b",
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}
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}
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func g3[T S]() T {
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b1 := "foo"
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b2 := "bar"
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return T{
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b1: "a",
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b2: "b",
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}
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}
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