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Fix warnings with GCC 7 on Centos 7

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* spot/twa/twagraph.cc: Mark two variables as unused.
* spot/twaalgos/aiger.cc: Avoid spurious nullptr dereference warning,
and mark more variable as unused.
* spot/twaalgos/forq_contains.cc (word::operator==): Mark as
maybe_unused.
* bin/ltlsynt.cc, spot/twaalgos/relabel.cc,
spot/twaalgos/mealy_machine.cc, spot/twaalgos/synthesis.cc,
spot/twaalgos/zlktree.cc: Avoid unused variables warnings.
* spot/twaalgos/toparity.cc: Remove uses of std::optional, they were
not necessary, and they trigger spurious warnings in GCC 7.  Also
work around a spurious "potential nullptr deref".
* tests/core/twacube.cc: Fix another potential nullptr warning.
* spot/twaalgos/simulation.cc: Work a around GCC 6/7 bug.
This commit is contained in:
Alexandre Duret-Lutz 2023-10-15 00:21:12 +02:00
parent 1a2746e182
commit 75f3a5f2c5
11 changed files with 115 additions and 107 deletions
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7
bin/ltlsynt.cc
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@ -447,8 +447,11 @@ namespace
{
robin_hood::unordered_set<spot::formula> removed_outputs;
for (auto [from, from_is_input, to] : rs->get_mapping())
if (!from_is_input)
removed_outputs.insert(from);
{
(void) to;
if (!from_is_input)
removed_outputs.insert(from);
}
for (const std::string& apstr: output_aps)
{
spot::formula ap = spot::formula::ap(apstr);