Bison 3.0 was released in 2013, and the current Debian stable (buster)
has version 3.3.2.
* m4/bison.m4: Remove -Wno-precedence and -Wno-empty-rule, keep
-Wno-deprecated just to protect from future deprecation warnings that
would be interpreted as errors.
* spot/parseaut/parseaut.yy, spot/parsetl/parsetl.yy: Use %empty
rules, prefer %precedence over %nonassoc, update %error-versbose and
%name-prefix to their more modern equivalent.
* spot/misc/trival.hh (maybe): Mark this function as noexcept to
please the compiler while compiling the parsers.
std::cerr will flush after each operator<< by default, so it's simpler
to use \n instead of std::endl, especially if we can merge \n into the
previous string. Ideally we should prefer \n for std::cout as well,
but there are reasonable cases where we want to call std::endl there,
so it's hard to enforce.
* tests/sanity/style.test: Diagnose occurrences of cerr.*<<.*endl.
* bin/autcross.cc, bin/autfilt.cc, bin/ltlcross.cc, bin/ltlsynt.cc,
spot/tl/formula.cc, spot/twa/bdddict.cc, tests/core/checkpsl.cc,
tests/core/checkta.cc, tests/core/consterm.cc, tests/core/emptchk.cc,
tests/core/equalsf.cc, tests/core/ikwiad.cc, tests/core/kind.cc,
tests/core/length.cc, tests/core/ltlrel.cc, tests/core/parity.cc,
tests/core/randtgba.cc, tests/core/reduc.cc, tests/core/syntimpl.cc,
tests/ltsmin/modelcheck.cc: Fix them.
Reported by Salomon Sickert.
* spot/twaalgos/complement.cc: Make sure the output of postproc
is deterministic.
* tests/core/ltlcross.test: Add test case.
* NEWS: Mention the bug.
* spot/twaalgos/product.cc: The res pointer should be
passed by reference since we reset it to nullptr when
output_aborter says "too large".
* python/spot/impl.i: Add binding for powerset.hh,
so we can use output_aborter in Python.
* tests/python/prodexpt.py: Test it.
* spot/twaalgos/genem.hh, spot/twaalgos/genem.cc
(generic_emptiness_check_for_scc): Add a version that takes an acc.
* spot/twaalgos/isweakscc.cc (scc_has_rejecting_cycle): Use
generic_emptiness_check_for_scc.
The previous patch triggered this issue again, failing
core/ltl2tgba2.test.
* spot/twaalgos/gfguarantee.cc: Separate the replaying of history from
the modification of the automaton.
* NEWS: Mention the bug.
* tests/python/twagraph-internals.ipynb, tests/python/automata.ipynb:
Adjust.
These rules come from Delag's paper, and help some cases
in issue #385.
* spot/tl/simplify.cc: Implement the simplification.
* doc/tl/tl.tex, NEWS: Document it.
* tests/core/385.test: New file.
* tests/Makefile.am: Add it.
* tests/core/reduccmp.test: More tests.
* tests/core/ltl2tgba2.test: Adjust one improved case.
* tests/python/automata.ipynb, tests/python/twagraph-internals.ipynb:
Adjust expected output, as the cnf/dnf reorder some subformulas.
