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rqt_topic crashes #432

Closed dseredyn closed 7 years ago

dseredyn commented 7 years ago

how to reproduce:

  1. rosrun rqt_topic rqt_topic
  2. select a topic

this gives an error:

[ERROR] [1487596624.452584, 40.374000]: bad callback: <bound method TopicInfo.message_callback of <rqt_topic.topic_info.TopicInfo object at 0x7f94480baed0>>
Traceback (most recent call last):
  File "/opt/ros/kinetic/lib/python2.7/dist-packages/rospy/topics.py", line 720, in _invoke_callback
    cb(msg)
  File "/opt/ros/kinetic/lib/python2.7/dist-packages/rqt_topic/topic_info.py", line 100, in message_callback
    self.sizes.append(buff.len)
AttributeError: 'cStringIO.StringO' object has no attribute 'len'
dirk-thomas commented 7 years ago

Thank you for the report. Please see #434 for a fix. It would be great if you could try the proposed patch and confirm that it resolves the problem for you.

khancyr commented 7 years ago

@dirk-thomas Hi, I confirm that the patch is correcting the problem

dirk-thomas commented 7 years ago

Thank you for trying and confirming.