From a8be1f8037e557708f7e288a8ea950269f418300 Mon Sep 17 00:00:00 2001
From: Denys Smirnov <dennwc@pm.me>
Date: Sun, 6 Mar 2022 18:28:16 +0200
Subject: [PATCH] cxgo: properly unwrap new value when using calloc

---
 pointers.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pointers.go b/pointers.go
index 1e97b69..54801d6 100644
--- a/pointers.go
+++ b/pointers.go
@@ -208,6 +208,14 @@ func (g *translator) cAddr(x Expr) PtrExpr {
 		return g.ToPointer(x)
 	}
 	if xt.Kind().Is(types.Array) {
+		if m, ok := x.(*MakeExpr); ok && m.Size.IsConst() {
+			if sz, ok := m.Size.(Number); ok && sz.IsOne() {
+				return &NewExpr{
+					e:    g.env.Env,
+					Elem: m.Elem,
+				}
+			}
+		}
 		return g.cAddr(g.NewCIndexExpr(x, cUintLit(0), nil))
 	}
 	return &TakeAddr{g: g, X: x}