1 files changed, 14 insertions, 0 deletions
diff --git a/src/sync/map_test.go b/src/sync/map_test.go
index 1eb3fc68a5..20872f3b72 100644
--- a/src/sync/map_test.go
+++ b/src/sync/map_test.go
@@ -5,6 +5,7 @@
 package sync_test
 
 import (
+	"internal/testenv"
 	"math/rand"
 	"reflect"
 	"runtime"
@@ -280,3 +281,16 @@ func TestCompareAndSwap_NonExistingKey(t *testing.T) {
 		t.Fatalf("CompareAndSwap on an non-existing key succeeded")
 	}
 }
+
+func TestMapRangeNoAllocations(t *testing.T) { // Issue 62404
+	testenv.SkipIfOptimizationOff(t)
+	var m sync.Map
+	allocs := testing.AllocsPerRun(10, func() {
+		m.Range(func(key, value any) bool {
+			return true
+		})
+	})
+	if allocs > 0 {
+		t.Errorf("AllocsPerRun of m.Range = %v; want 0", allocs)
+	}
+}