Initial commit: Go 1.23 release state

test/fixedbugs/issue23522.go

@@ -0,0 +1,46 @@
+// run
+
+// Copyright 2018 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 (
+	"math"
+)
+
+type S struct {
+	u int64
+	n int32
+}
+
+func F1(f float64) *S {
+	s := f
+	pf := math.Copysign(f, 1)
+	u := math.Floor(pf)
+	return &S{
+		u: int64(math.Copysign(u, s)),
+		n: int32(math.Copysign((pf-u)*1e9, s)),
+	}
+}
+
+func F2(f float64) *S {
+	s := f
+	f = math.Copysign(f, 1)
+	u := math.Floor(f)
+	return &S{
+		u: int64(math.Copysign(u, s)),
+		n: int32(math.Copysign((f-u)*1e9, s)),
+	}
+}
+
+func main() {
+	s1 := F1(-1)
+	s2 := F2(-1)
+	if *s1 != *s2 {
+		println("F1:", s1.u, s1.n)
+		println("F2:", s2.u, s2.n)
+		panic("different")
+	}
+}