1 files changed, 40 insertions, 0 deletions
diff --git a/test/fixedbugs/issue54638.go b/test/fixedbugs/issue54638.go
new file mode 100644
index 0000000..d0258b0
--- /dev/null
+++ b/test/fixedbugs/issue54638.go
@@ -0,0 +1,40 @@
+// compile
+
+// Copyright 2022 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.
+
+// Issue 54638: composite literal assignment with
+// alignment > PtrSize causes ICE.
+
+package p
+
+import "sync/atomic"
+
+type S struct{ l any }
+
+type T struct {
+	H any
+	a [14]int64
+	f func()
+	x atomic.Int64
+}
+
+//go:noinline
+func (T) M(any) {}
+
+type W [2]int64
+
+//go:noinline
+func (W) Done() {}
+
+func F(l any) [3]*int {
+	var w W
+	var x [3]*int // use some stack
+	t := T{H: S{l: l}}
+	go func() {
+		t.M(l)
+		w.Done()
+	}()
+	return x
+}