address addressable map values

Fixes kr#10
bmizerany · May 18, 2022 · d9df86d · d9df86d
1 parent 4178042
commit d9df86d
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/diff.go b/diff.go
@@ -353,8 +353,8 @@ func (d *differ) walk(e emitfer, av, bv reflect.Value, xformOk, wantType bool) {
 
 		for _, k := range sortedKeys(av, bv) {
 			esub := e.subf(t, "[%#v]", k)
-			ak := av.MapIndex(k)
-			bk := bv.MapIndex(k)
+			ak := addressable(av.MapIndex(k))
+			bk := addressable(bv.MapIndex(k))
 			esub.set(ak, bk)
 			if ak.IsValid() && bk.IsValid() {
 				d.walk(esub, ak, bk, true, false)

diff --git a/diff_test.go b/diff_test.go
@@ -62,6 +62,10 @@ func TestEqual(t *testing.T) {
 		ab(make(chan int)),
 		ab(unsafe.Pointer(new(int))),
 		ab(unsafe.Pointer(nil)),
+		{
+			map[int]struct{ F int }{0: {}},
+			map[int]struct{ F int }{0: {}},
+		},
 	}
 
 	for _, tt := range cases {