mirror of
https://github.com/golang/go
synced 2024-09-04 23:44:16 +00:00
f88c3b9f4d
Given we have support for field access to type params with a single structural type, we need to distinguish between methods calls and field access when we have an OXDOT node on an expression which is a typeparam (or correspondingly a shape). We were missing checks in getInstInfo, which figures out the dictionary format, which then caused problems when we generate the dictionaries. We don't need/want dictionary entries for field access, only for bound method calls. Added a new function isBoundMethod() to distinguish OXDOT nodes which are bound calls vs. field accesses on a shape. Removed isShapeDeref() - we can't have field access or method call on a pointer to variable of type param type. Fixes #50690 Change-Id: Id692f65e6f427f28cd2cfe474dd30e53c71877a7 Reviewed-on: https://go-review.googlesource.com/c/go/+/379674 Trust: Dan Scales <danscales@google.com> Reviewed-by: Keith Randall <khr@golang.org>
37 lines
587 B
Go
37 lines
587 B
Go
// run -gcflags=-G=3
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// Copyright 2022 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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package main
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import (
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"fmt"
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)
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type Printer[T ~string] struct {
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PrintFn func(T)
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}
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func Print[T ~string](s T) {
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fmt.Println(s)
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}
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func PrintWithPrinter[T ~string, S struct {
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ID T
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PrintFn func(T)
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}](message T, obj S) {
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obj.PrintFn(message)
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}
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func main() {
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PrintWithPrinter(
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"Hello, world.",
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struct {
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ID string
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PrintFn func(string)
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}{ID: "fake", PrintFn: Print[string]},
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)
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}
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