From fefd32a97664a69a863420baf6c604c7dc979e3b Mon Sep 17 00:00:00 2001
From: Takuya Ueda <uedatakuya@gmail.com>
Date: Tue, 10 Dec 2019 19:48:59 +0900
Subject: [PATCH] Remove default case for unexpected types

---
 passes/wraperr/testdata/src/a/a.go | 17 +++++++++++++++++
 passes/wraperr/wraperr.go          |  2 --
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/passes/wraperr/testdata/src/a/a.go b/passes/wraperr/testdata/src/a/a.go
index c7f4b07..13f20fb 100644
--- a/passes/wraperr/testdata/src/a/a.go
+++ b/passes/wraperr/testdata/src/a/a.go
@@ -112,3 +112,20 @@ func f9(ctx context.Context, client *spanner.Client) {
 		return lib.SpannerErr() // OK
 	})
 }
+
+func f10(ctx context.Context, client *spanner.Client) {
+	var outsideErr error
+	client.ReadWriteTransaction(ctx, func(ctx context.Context, txn *spanner.ReadWriteTransaction) error {
+		// Because err is a free variable,
+		// err may be assigned in other goroutines.
+		outsideErr = func(txn *spanner.ReadWriteTransaction) error {
+			stmt := spanner.Statement{SQL: `SELECT 1`}
+			_, err := client.Single().Query(ctx, stmt).Next()
+			if err != nil {
+				return &wrapErr{err}
+			}
+			return nil
+		}(txn) // OK
+		return outsideErr
+	})
+}
diff --git a/passes/wraperr/wraperr.go b/passes/wraperr/wraperr.go
index 316573a..f731c9d 100644
--- a/passes/wraperr/wraperr.go
+++ b/passes/wraperr/wraperr.go
@@ -123,8 +123,6 @@ func (r *runner) returnedWrappedErr(v ssa.Value) token.Pos {
 				if r.returnedWrappedErr(v.Common().Value) != token.NoPos {
 					return v.Pos()
 				}
-			default:
-				return v.Pos()
 			}
 		}
 	}