Custom semantic mutators about libprotobuf-mutator HOT 6 CLOSED

Not sure if I understand the question.
Still maybe PostProcessorRegistration can solve your problem?
You can use it to tweak message as you like.

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Thanks for your input. Yeah, I came to the same conclusion :-)

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Do you happen to know about this

libprotobuf-mutator/src/mutator.cc:471:43: runtime error: member call on address 0x000007da9f40 which  does not point to an object of type 'google::protobuf::Message'

from

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can you share a reproducer?

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I think this may be an issue with my postprocessor callback implementation. I took a look at the linked example, where you add an optional field in a message

Is there a slightly more advanced example where the field is itself a message that you need to create and add to the existing message passed via the callback?

Pseudo-code that I am using for this use-case is:

customMutation(
	Message::descriptor(),
	[](google::protobuf::Message* _message, unsigned int _seed)
	{
              if (_seed % 2) {
                    SubMessage* subMsg = new SubMessage();
                    // Add some custom values to subMsg
                    _message->set_allocated_SubMessage(subMsg);
              }
        }

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Closing because the original question has been addressed.

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