$ ./john -test --format=NT Benchmarking: NT MD4 [OpenCL 1.0]... OpenCL Platform: <<>> and device: <<>> OpenCL: Error building program. Log: OpenCL: /tmp/OCLDzRgH3.cl(65): error: goto statement not allowed goto key_cleaning; ^ /tmp/OCLDzRgH3.cl(80): error: goto statement not allowed goto key_cleaning; ^ 2 errors detected in the compilation of "/tmp/OCLDzRgH3.cl". OpenCL: Error creating kernel OpenCL: Error setting argument 1 OpenCL: Error setting argument 2FAILED (get_hash[0](0)) $