Update to go1.24.0

src/internal/runtime/maps/export_noswiss_test.go

@@ -0,0 +1,51 @@
+// 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.
+
+//go:build !goexperiment.swissmap
+
+// This file allows non-GOEXPERIMENT=swissmap builds (i.e., old map builds) to
+// construct a swissmap table for running the tests in this package.
+
+package maps
+
+import (
+	"internal/abi"
+	"unsafe"
+)
+
+type instantiatedGroup[K comparable, V any] struct {
+	ctrls ctrlGroup
+	slots [abi.SwissMapGroupSlots]instantiatedSlot[K, V]
+}
+
+type instantiatedSlot[K comparable, V any] struct {
+	key  K
+	elem V
+}
+
+func newTestMapType[K comparable, V any]() *abi.SwissMapType {
+	var m map[K]V
+	mTyp := abi.TypeOf(m)
+	omt := (*abi.OldMapType)(unsafe.Pointer(mTyp))
+
+	var grp instantiatedGroup[K, V]
+	var slot instantiatedSlot[K, V]
+
+	mt := &abi.SwissMapType{
+		Key:       omt.Key,
+		Elem:      omt.Elem,
+		Group:     abi.TypeOf(grp),
+		Hasher:    omt.Hasher,
+		SlotSize:  unsafe.Sizeof(slot),
+		GroupSize: unsafe.Sizeof(grp),
+		ElemOff:   unsafe.Offsetof(slot.elem),
+	}
+	if omt.NeedKeyUpdate() {
+		mt.Flags |= abi.SwissMapNeedKeyUpdate
+	}
+	if omt.HashMightPanic() {
+		mt.Flags |= abi.SwissMapHashMightPanic
+	}
+	return mt
+}