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https://github.com/golang/go
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2589a89468
The itab we're initializing again, just to figure out which method is missing, might be stored in read-only memory. This can only happen in certain weird generics situations, so it is pretty rare, but it causes a runtime crash when it does happen. Fixes #65962 Change-Id: Ia86e216fe33950a794ad8e475e76317f799e9136 Reviewed-on: https://go-review.googlesource.com/c/go/+/567615 Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com>
49 lines
625 B
Go
49 lines
625 B
Go
// run
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// Copyright 2024 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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func main() {
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test1()
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test2()
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}
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type I interface {
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f()
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g()
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h()
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}
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//go:noinline
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func ld[T any]() {
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var x I
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if _, ok := x.(T); ok {
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}
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}
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func isI(x any) {
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_ = x.(I)
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}
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func test1() {
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defer func() { recover() }()
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ld[bool]() // add <bool,I> itab to binary
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_ = any(false).(I)
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}
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type B bool
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func (B) f() {
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}
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func (B) g() {
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}
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func test2() {
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defer func() { recover() }()
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ld[B]() // add <B,I> itab to binary
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_ = any(B(false)).(I)
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}
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