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master
test/fixedbugs/issue65417.go
42 строки
752 B
Cuong Manh Le
cmd/compile/internal/typecheck: remove constant bounds check
21 фев 2024, 01:29
21 фев 2024, 01:29
5428cc4
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// run // Copyright 2024 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 main import ( "strings" "unsafe" ) func main() { shouldPanic("runtime error: index out of range", func() { f(0) }) shouldPanic("runtime error: index out of range", func() { g(0) }) } func f[T byte](t T) { const str = "a" _ = str[unsafe.Sizeof(t)] } func g[T byte](t T) { const str = "a" _ = str[unsafe.Sizeof(t)+0] } func shouldPanic(str string, f func()) { defer func() { err := recover() if err == nil { panic("did not panic") } s := err.(error).Error() if !strings.Contains(s, str) { panic("got panic " + s + ", want " + str) } }() f() }