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c9912780ab
This CL changes cmd/compile's -G flag's default from 0 to 3, which enables use of the new types2 type checker and support for type parameters. The old type checker is still available with -gcflags=all=-G=0. The CL also updates the regress test harness to account for the change in default behavior (e.g., to expect known types2 changes/failures). However, the -G=0 mode is still being tested for now. Copy of CL 340914 by danscales@, minus the cmd/internal/objabi.AbsFile change (handled instead by CL 343731) and rebased to master branch. Updates #43651. Change-Id: I1f62d6c0a3ff245e15c5c0e8f3d922129fdd4f29 Reviewed-on: https://go-review.googlesource.com/c/go/+/343732 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
56 lines
1 KiB
Go
56 lines
1 KiB
Go
// compile -G=1
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// Copyright 2020 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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// This file checks simple code using type parameters.
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package smoketest
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// type parameters for functions
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func f1[P any]() {}
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func f2[P1, P2 any, P3 any]() {}
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func f3[P interface{}](x P, y T1[int]) {}
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// function instantiations
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var _ = f1[int]
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var _ = f2[int, string, struct{}]
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var _ = f3[bool]
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// type parameters for types
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type T1[P any] struct{}
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type T2[P1, P2 any, P3 any] struct{}
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type T3[P interface{}] interface{}
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// type instantiations
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type _ T1[int]
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type _ T2[int, string, struct{}]
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type _ T3[bool]
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// methods
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func (T1[P]) m1() {}
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func (T1[_]) m2() {}
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func (x T2[P1, P2, P3]) m() {}
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// type lists
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type _ interface {
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m1()
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m2()
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int | float32 | string
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m3()
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}
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// embedded instantiated types
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type _ struct {
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f1, f2 int
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T1[int]
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T2[int, string, struct{}]
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T3[bool]
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}
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type _ interface {
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m1()
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m2()
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T3[bool]
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}
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