how to compile a target for dynamorio

[Tom Tailor]

Hi all 

I use dynamorio in combinaton with winafl, i use  the following drrrun  command

D:\winafl6\winafl\DynamoRIO\bin64\drrun.exe -debug -c winafl.dll -debug -fuzz_iterations 10 -coverage_module VulnLib.dll  -target_module VulnLib.dll   -target_method FuzzMeM8ate -nargs 4 -- test_harness.exe test.txt

winafl dose not create any debug output but dynamorio creates a rather cryptic message 

I have the assumption that my harness is improperly build 

I attached a screenshot  

I would apriciate any hints

thanks for your help 

[Doug Evans]

Hi. The error message indicates an internal error in dynamorio.

Hard to say whether it's a bug you can work around or not.

It would be good to file a bug.  https://github.com/DynamoRIO/dynamorio/issues

Beyond that, maybe someone else can provide things to try.

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[Derek Bruening]

Probably this is a secondary assert after some prior bad thing happened early during init before those dynamo_dll_start, etc. vars were initialized: get a callstack to see the real culprit.  See https://dynamorio.org/page_debugging.html.

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