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don't create dependencies if both root and end are not connected to any task
authorFrederic Suter <frederic.suter@cc.in2p3.fr>
Wed, 17 May 2017 06:28:42 +0000 (08:28 +0200)
committerFrederic Suter <frederic.suter@cc.in2p3.fr>
Wed, 17 May 2017 06:28:42 +0000 (08:28 +0200)
commit5d4ddd2bba5d37272aefa3108883a526b645be78
treeb856166b0a606df125b0ce3c5c01b449046ea271
parent1c8e95bf8d59453e2aead5f965e3db907361da1d
don't create dependencies if both root and end are not connected to any task

This happens when none of the actual jobs described in the DAX file
consumes and produces any file. In that case, root has no successor
and a dependency to end is created but end has no predecessor and a
dependency from root is created ... that already exists.
src/simdag/sd_daxloader.cpp