Fix a breakage in `log.info(err)` on a logger with no serializers.

CHANGES.md

@@ -8,11 +8,14 @@ Known issues:
 
 ## bunyan 1.1.2 (not yet released)
 
-(nothing yet)
+- Fix a breakage in `log.info(err)` on a logger with no serializers.
 
 
 ## bunyan 1.1.1
 
+Note: *Bad release.* It breaks `log.info(err)` on a logger with no serializers.
+Use version 1.1.2.
+
 - [pull #168] Fix handling of `log.info(err)` to use the `log` Logger's `err`
   serializer if it has one, instead of always using the core Bunyan err
   serializer. (By Mihai Tomescu.)

lib/bunyan.js

@@ -830,7 +830,7 @@ function mkLogEmitter(minLevel) {
                 // `log.<level>(err, ...)`
                 fields = {
                     // Use this Logger's err serializer, if defined.
-                    err: (log.serializers.err
+                    err: (log.serializers && log.serializers.err
                         ? log.serializers.err(args[0])
                         : Logger.stdSerializers.err(args[0]))
                 };

test/log.test.js

@@ -238,3 +238,14 @@ test('log.info(<fields>, <array>)', function (t) {
     });
     t.end();
 });
+
+test('log.info(<err>)', function (t) {
+    var e = new Error('boom');
+    names.forEach(function (lvl) {
+        log3[lvl].call(log3, e);
+        var rec = catcher.records[catcher.records.length - 1];
+        t.equal(rec.err.message, 'boom',
+            format('log.%s err.message: got %j', lvl, rec.err.message));
+    });
+    t.end();
+});