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[Discuss-gnuradio] possible bug in gr_pfb_clock_sync_ccf.cc


From: Don Ward
Subject: [Discuss-gnuradio] possible bug in gr_pfb_clock_sync_ccf.cc
Date: Sat, 3 Dec 2011 15:45:34 -0500

Building gnuradio/master on Windows XP with MSVC++ 2010, I find that the test example qa_constellation_receiver_test hangs. Setting ENABLE_LOGGING in gr_block_executor.cc shows that gr_clock_sync_ccf's general_work() is being called repeatedly with noutput_items=1. But said general_work() only produces output for i < noutput_items-d_osps, so it produces no output when noutput_items and d_osps are both equal to 1.

This behavior occurs after the vector_source and all preceeding block have terminated.

Not knowing exactly what gr_clock_sync_ccf is supposed to do and how it is supposed to work, I am having trouble debugging the problem further. Can anyone help?

Thanks,

-- Don W.




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