From 3b13c93b3c352a63c45fd407fc9d0d2956fb1c3b Mon Sep 17 00:00:00 2001
From: Russ Egan <russellegan@gmail.com>
Date: Thu, 26 Sep 2019 16:49:49 -0500
Subject: [PATCH] fix endless loop

---
 core.go     |  1 +
 log_test.go | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/core.go b/core.go
index 241e082..df2a7e2 100644
--- a/core.go
+++ b/core.go
@@ -133,6 +133,7 @@ func (l *Core) sweetenFields(args []interface{}) []zap.Field {
 			// passed a bare arg with no key.  We'll handle this
 			// as a special case
 			fields = append(fields, zap.Any("", args[0]))
+			return fields
 		}
 
 		// Make sure this element isn't a dangling key.
diff --git a/log_test.go b/log_test.go
index 317aac6..e62f8e0 100644
--- a/log_test.go
+++ b/log_test.go
@@ -219,3 +219,22 @@ func TestAddCallerSkip(t *testing.T) {
 	logSomething(c)
 	assert.Contains(t, buf.String(), "caller:flume/log_test.go:")
 }
+
+func TestSingleArgument(t *testing.T) {
+	f := NewFactory()
+	f.SetDefaultLevel(DebugLevel)
+	f.SetAddCaller(true)
+
+	c := f.NewCore("green")
+
+	buf := bytes.NewBuffer(nil)
+	f.SetOut(buf)
+
+	c.Info("green", "red")
+	assert.NotContains(t, buf.String(), _oddNumberErrMsg)
+
+	buf.Reset()
+
+	c.Info("green", "color", "red", "yellow")
+	assert.Contains(t, buf.String(), _oddNumberErrMsg)
+}