go/test/typeparam/issue48609.go

// compile

// Copyright 2021 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

func f[T ~chan E, E any](e E) T {
	ch := make(T)
	go func() {
		defer close(ch)
		ch <- e
	}()
	return ch
}
all: avoid use of cmd/compile -G flag in tests The next CL will remove the -G flag, effectively hard-coding it to its current default (-G=3). Change-Id: Ib4743b529206928f9f1cca9fdb19989728327831 Reviewed-on: https://go-review.googlesource.com/c/go/+/388534 Reviewed-by: Keith Randall <khr@golang.org> Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> 2022-02-28 14:32:19 -08:00			`// compile`
cmd/compile: fix delayTransform condition The delayTransform only checks whether ir.CurFunc is generic function or not. but when compiling a non-generic closure inside a generic function, we also want to delay the transformation, which delayTransform fails to detect, since when ir.CurFunc is the closure, not the top level function. Instead, we must rely on irgen.topFuncIsGeneric field to decide whether to delay the transformation, the same logic with what is being done for not adding closure inside a generic function to g.target.Decls list. Fixes #48609 Change-Id: I5bf5592027d112fe8b19c92eb906add424c46507 Reviewed-on: https://go-review.googlesource.com/c/go/+/351855 Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com> Trust: Dan Scales <danscales@google.com> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Dan Scales <danscales@google.com> 2021-09-24 23:11:18 +07:00
			`// Copyright 2021 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`

constraints: remove Slice/Map/Chan Now that we permit arbitrary types as constraints, we no longer need them. For #48424 Change-Id: I15fef26a563988074650cb0801895b002c44148a Reviewed-on: https://go-review.googlesource.com/c/go/+/359258 Trust: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org> 2021-10-27 14:11:33 -07:00			`func f[T ~chan E, E any](e E) T {`
cmd/compile: fix delayTransform condition The delayTransform only checks whether ir.CurFunc is generic function or not. but when compiling a non-generic closure inside a generic function, we also want to delay the transformation, which delayTransform fails to detect, since when ir.CurFunc is the closure, not the top level function. Instead, we must rely on irgen.topFuncIsGeneric field to decide whether to delay the transformation, the same logic with what is being done for not adding closure inside a generic function to g.target.Decls list. Fixes #48609 Change-Id: I5bf5592027d112fe8b19c92eb906add424c46507 Reviewed-on: https://go-review.googlesource.com/c/go/+/351855 Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com> Trust: Dan Scales <danscales@google.com> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Dan Scales <danscales@google.com> 2021-09-24 23:11:18 +07:00			`ch := make(T)`
			`go func() {`
			`defer close(ch)`
			`ch <- e`
			`}()`
			`return ch`
			`}`