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https://github.com/golang/go
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254948a50e
Leftover values that have been replaced can cause problems in later passes (within expandCalls). For example, a struct select that itself yields a struct will have a problematic rewrite, if the chance is presented. Updates #40724. Change-Id: I1b445c47c301c3705f7fc0a9d39f1f5c84f4e190 Reviewed-on: https://go-review.googlesource.com/c/go/+/306869 Trust: David Chase <drchase@google.com> Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
37 lines
676 B
Go
37 lines
676 B
Go
// run
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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 patchlist struct {
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head, tail uint32
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}
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type frag struct {
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i uint32
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out patchlist
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}
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//go:noinline
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//go:registerparams
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func patch(l patchlist, i uint32) {
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}
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//go:noinline
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//go:registerparams
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func badbad(f1, f2 frag) frag {
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// concat of failure is failure
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if f1.i == 0 || f2.i == 0 { // internal compiler error: 'badbad': incompatible OpArgIntReg [4]: v42 and v26
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return frag{}
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}
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patch(f1.out, f2.i)
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return frag{f1.i, f2.out}
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}
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func main() {
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badbad(frag{i: 2}, frag{i: 3})
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}
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