From d2aabab95c40d90d656ecd7c8d78876597191873 Mon Sep 17 00:00:00 2001
From: tenntenn <uedatakuya@gmail.com>
Date: Thu, 1 Oct 2020 20:40:41 +0900
Subject: [PATCH] Fix UnOp

---
 ssa.go                    | 6 ++++++
 testdata/src/used/used.go | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/ssa.go b/ssa.go
index 79cec17..517f6b9 100644
--- a/ssa.go
+++ b/ssa.go
@@ -109,6 +109,12 @@ func usedInInstr(v ssa.Value, instr ssa.Instruction) ssa.Instruction {
 			}
 		}
 	}
+
+	switch v := v.(type) {
+	case *ssa.UnOp:
+		return usedInInstr(v.X, instr)
+	}
+
 	return nil
 }
 
diff --git a/testdata/src/used/used.go b/testdata/src/used/used.go
index 90e60e8..0fa5317 100644
--- a/testdata/src/used/used.go
+++ b/testdata/src/used/used.go
@@ -46,3 +46,9 @@ func f8(v interface{}) { // want "used"
 		println(v)
 	}()
 }
+
+func f9(v interface{}) { // want "used"
+	func(v interface{}) { // want "used"
+		println(v)
+	}(v)
+}