[Discuss-gnuradio] symbol already exists: cannot reuse! runtime error

[Eugene Grayver]

I have a rather complicated GR application.  I create (Python, w/out grc) multiple top_blocks, each containing dozens of blocks.  To make things even more complicated, the flowgraphs are created in stages – using runtime reconfiguration to add more blocks. 

 

Everything works fine until I reach some critical size (apparently).  Then I get an error: ‘symbol already exists cannot reuse’  It has something to do with registering a block name in ‘block_registry::register_symbolic_name’

 

I experience this error with both versions 3.7.9.2 and 3.7.11.

 

I am at a loss on how to debug this problem.  Reviewing the code seems OK – the thread locks look good.  I have no idea how a block with the same name can show up twice.  Is this due to multiple top_block instances?  Due to runtime reconfig? 

 

Ideas?

 

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Eugene Grayver, Ph.D.
Aerospace Corp., Sr. Eng. Spec.
Tel: 310.336.1274
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