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master
test/fixedbugs/issue57184.go
40 строк
851 B
Keith Randall
cmd/compile: fix conditional select rule
10 дек 2022, 00:38
10 дек 2022, 00:38
e8f78cb
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// run // Copyright 2022 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 ( "log" "reflect" "sort" ) func main() { const length = 257 x := make([]int64, length) for i := 0; i < length; i++ { x[i] = int64(i) * 27644437 % int64(length) } isLessStatic := func(i, j int) bool { return x[i] < x[j] } isLessReflect := reflect.MakeFunc(reflect.TypeOf(isLessStatic), func(args []reflect.Value) []reflect.Value { i := args[0].Int() j := args[1].Int() b := x[i] < x[j] return []reflect.Value{reflect.ValueOf(b)} }).Interface().(func(i, j int) bool) sort.SliceStable(x, isLessReflect) for i := 0; i < length-1; i++ { if x[i] >= x[i+1] { log.Fatalf("not sorted! (length=%v, idx=%v)\n%v\n", length, i, x) } } }