From 29e1777d820d30f3c04b08d8fdde49b2400b4810 Mon Sep 17 00:00:00 2001
From: Marc Vertes <mvertes@free.fr>
Date: Thu, 16 Apr 2020 12:24:04 +0200
Subject: [PATCH] fix: assign composite literal by reference

---
 _test/composite8.go | 16 ++++++++++++++++
 interp/run.go       |  3 ++-
 2 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 _test/composite8.go

diff --git a/_test/composite8.go b/_test/composite8.go
new file mode 100644
index 00000000..f69cdc88
--- /dev/null
+++ b/_test/composite8.go
@@ -0,0 +1,16 @@
+package main
+
+type T struct{ I int }
+
+func main() {
+	t := []*T{}
+	s := []int{1, 2}
+	for _, e := range s {
+		x := &T{e}
+		t = append(t, x)
+	}
+	println(t[0].I, t[1].I)
+}
+
+// Output:
+// 1 2
diff --git a/interp/run.go b/interp/run.go
index 48b0f04d..6b2b4fc9 100644
--- a/interp/run.go
+++ b/interp/run.go
@@ -1732,6 +1732,7 @@ func doCompositeLit(n *node, hasType bool) {
 		}
 	}
 
+	i := n.findex
 	n.exec = func(f *frame) bltn {
 		a := reflect.New(n.typ.TypeOf()).Elem()
 		for i, v := range values {
@@ -1743,7 +1744,7 @@ func doCompositeLit(n *node, hasType bool) {
 		case destInterface:
 			d.Set(reflect.ValueOf(valueInterface{n, a}))
 		default:
-			d.Set(a)
+			f.data[i] = a
 		}
 		return next
 	}