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-rw-r--r--test/fixedbugs/issue57184.go40
1 files changed, 40 insertions, 0 deletions
diff --git a/test/fixedbugs/issue57184.go b/test/fixedbugs/issue57184.go
new file mode 100644
index 0000000..1384b50
--- /dev/null
+++ b/test/fixedbugs/issue57184.go
@@ -0,0 +1,40 @@
+// 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)
+ }
+ }
+}