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Catch exceptions by const-reference

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Exceptions caught by value incur needless cost in C++, most of them can
be caught by const-reference, especially as nearly none are actually
used. This could allow compiler generate a slightly more efficient code.
This commit is contained in:
Michał Janiszewski 2018-10-12 21:15:31 +02:00
parent b301a59899
commit cfd0486582
36 changed files with 45 additions and 45 deletions
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2
src/math/polynomial/algebraic_numbers.cpp
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@ -1989,7 +1989,7 @@ namespace algebraic_numbers {
TRACE("anum_eval_sign", tout << "all variables are assigned to rationals, value of p: " << r << "\n";);
return qm().sign(r);
}
catch (opt_var2basic::failed) {
catch (const opt_var2basic::failed &) {
// continue
}

2
src/math/polynomial/polynomial.cpp
View file

@ -4493,7 +4493,7 @@ namespace polynomial {
}
#endif
}
catch (sparse_mgcd_failed) {
catch (const sparse_mgcd_failed &) {
flet<bool> use_prs(m_use_prs_gcd, false);
gcd_prs(u, v, x, r);
}

4
src/math/subpaving/tactic/subpaving_tactic.cpp
View file

@ -183,7 +183,7 @@ class subpaving_tactic : public tactic {
process_clause(g.form(i));
}
}
catch (subpaving::exception) {
catch (const subpaving::exception &) {
throw tactic_exception("failed to internalize goal into subpaving module");
}
}
@ -195,7 +195,7 @@ class subpaving_tactic : public tactic {
try {
(*m_ctx)();
}
catch (subpaving::exception) {
catch (const subpaving::exception &) {
throw tactic_exception("failed building subpaving tree...");
}
if (m_display) {