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go/test/typeparam/issue53390.go
Cuong Manh Le 527ace0ffa cmd/compile: skip substituting closures in unsafe builtins arguments
For unsafe.{Alignof,Offsetof,Sizeof}, subster will transform them them
to OLITERAL nodes, and discard their arguments. However, any closure in
their children nodes were already processed and added to declaration
queue. Thus, we lack of information for generating instantiation for
the closure.

To fix it, just skip substituting the closures if we are going to edit
the children nodes of unsafe builtins.

Fixes #53390

Change-Id: Ia815cd05af9dc0491f10faac4399f378ac53dec6
Reviewed-on: https://go-review.googlesource.com/c/go/+/412794
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-06-18 00:48:50 +00:00

21 lines
334 B
Go

// compile
// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package p
import "unsafe"
func F[T any](v T) uintptr {
return unsafe.Alignof(func() T {
func(any) {}(struct{ _ T }{})
return v
}())
}
func f() {
F(0)
}