Hi,
I'm using Ubuntu 16.04 and I installed GNURadio using the PyBombs. My
installation path is /home/user/src/gnuradio/default.
In a terminal
user@pc:~$cd /home/user/src/gnuradio/default
user@pc:~/src/gnuradio/default$source setup_env.sh
user@pc:~/src/gnuradio/default$gnuradio-companion
I create a new flowgraph with two variables
1) ID = a
Value = b
2) ID = b
Value = a
Creating a circular dependency. When I click OK, The variable dialog
doesn't go away. The expected behaviour, I think, it would be for the
bottom part of the dialog box to show the problem. For example, if I assign
Value=c to the ID=b, the c value doesn't exist and the dialog shows:
Param - Value(value):
Value "c" cannot be evaluated:
name 'c' is not defined
However, with the circular dependency, the variable dialog is empty and the
exception is raised in the terminal. The dialog can't be cancelled, only
closed with the window close button (red X).
Traceback (most recent call last):
File
"/home/user/src/gnuradio/default/lib/python2.7/dist-packages/gnuradio/grc/gui/ActionHandler.py",
line 469, in _handle_action
flow_graph_update()
File
"/home/user/src/gnuradio/default/lib/python2.7/dist-packages/gnuradio/grc/gui/ActionHandler.py",
line 113, in flow_graph_update
fg.update()
File
"/home/user/src/gnuradio/default/lib/python2.7/dist-packages/gnuradio/grc/gui/FlowGraph.py",
line 474, in update
self.rewrite()
File
"/home/user/src/gnuradio/default/lib/python2.7/dist-packages/gnuradio/grc/core/FlowGraph.py",
line 221, in rewrite
self.renew_namespace()
File
"/home/user/src/gnuradio/default/lib/python2.7/dist-packages/gnuradio/grc/core/FlowGraph.py",
line 255, in renew_namespace
for variable in self.get_variables():
File
"/home/user/src/gnuradio/default/lib/python2.7/dist-packages/gnuradio/grc/core/FlowGraph.py",
line 91, in get_variables
return expr_utils.sort_objects(variables, methodcaller('get_id'),
methodcaller('get_var_make'))
File
"/home/user/src/gnuradio/default/lib/python2.7/dist-packages/gnuradio/grc/core/utils/expr_utils.py",
line 189, in sort_objects
sorted_ids = sort_variables(id2expr)
File
"/home/user/src/gnuradio/default/lib/python2.7/dist-packages/gnuradio/grc/core/utils/expr_utils.py",
line 164, in sort_variables
raise Exception('circular dependency caught in sort_variables')
Exception: circular dependency caught in sort_variables
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