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twagraph: fix merge_edges() ignoring the first edge

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This fixes #441, reported by Jérôme Dubois.

* tests/python/mergedge.py: New file.
* tests/Makefile.am: Add it.
* spot/twa/twagraph.cc (merge_edges): Fix initialization of second
loop.
* NEWS: Mention the bug.
This commit is contained in:
Alexandre Duret-Lutz 2020-11-24 15:55:36 +01:00
parent 71060db9dd
commit fb224d3f63
4 changed files with 36 additions and 1 deletions
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5
NEWS
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@ -147,6 +147,11 @@ New in spot 2.9.5.dev (not yet released)
- Bindings for functions related to parity games.
See https://spot.lrde.epita.fr/ipynb/paritygame.html for examples.
Bugs fixed:
- twa_graph::merge_edges() could fail to merge two transitions if the
destination transition was the first of the automaton. (Issue #441)
New in spot 2.9.5 (2020-11-19)
Bugs fixed: