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CL 256798 added compiler ability to retain only used interface methods, by generating a mark relocation whenever an interface method is used. To do that, the compiler needs the current function linker object. However, for unnamed function "func _()", its linker object is nil, causes the compiler crashes for code in #45258. CL 283313 fixed the code in #45258 unintentionally, since when the compiler now does not walk unnamed functions anymore. This CL fixes the root issue, by making reflectdata.MarkUsedIfaceMethod skips unnamed functions, and also adding regression test. Fixes #45258 Change-Id: I4cbefb0a89d9928f70c00dc8a271cb61cd20a49c Reviewed-on: https://go-review.googlesource.com/c/go/+/311130 Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
29 lines
396 B
Go
29 lines
396 B
Go
// compile
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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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package main
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type Fooer interface {
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Foo() Barer
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}
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type Barer interface {
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Bar()
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}
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type impl struct{}
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func (r *impl) Foo() Barer {
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return r
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}
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func (r *impl) Bar() {}
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func _() {
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var r Fooer = &impl{}
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r.Foo().Bar()
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}
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