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Automata with no state are no longer allowed.

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* NEWS, spot/twa/twa.hh: Document the change.
* spot/twa/twagraph.hh, spot/kripke/kripkegraph.hh:
  Add an exception in get_init_state_number().
  get_init_state() now calls get_init_state_number().
* spot/twa/twagraph.cc, spot/twaalgos/simulation.cc,
  spot/twaalgos/powerset.cc, spot/twaalgos/complete.cc,
  spot/twaalgos/sccfilter.cc: Remove now useless tests.
* spot/twaalgos/hoa.cc: Remove now useless comment.
* spot/twaalgos/minimize.cc: Never return an automaton with no state.
This commit is contained in:
Maximilien Colange 2016-11-25 13:42:13 +01:00
parent da6fc955a3
commit b3ee68310f
11 changed files with 24 additions and 38 deletions
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4
NEWS
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@ -1,5 +1,9 @@
New in spot 2.2.1.dev (Not yet released)
Library:
* A twa is required to have at least one state, the initial state.
Build:
* If the system has an installed libltdl library, use it instead of