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Fix FunC UB (#656)

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* Fix UB in func

* Improve optimizing int consts and unused variables in FunC

* Bump funC version to 0.4.3

* Fix analyzing repeat loop

---------

Co-authored-by: SpyCheese <mikle98@yandex.ru>
This commit is contained in:
EmelyanenkoK 2023-04-03 10:13:39 +03:00 • committed by GitHub
parent f51eb2d747
commit 8eb167b76a
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GPG key ID: 4AEE18F83AFDEB23
8 changed files with 31 additions and 8 deletions
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7
crypto/func/analyzer.cpp
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@ -388,7 +388,7 @@ bool Op::compute_used_vars(const CodeBlob& code, bool edit) {
for (; l_it < left.cend(); ++l_it, ++r_it) {
if (std::find(l_it + 1, left.cend(), *l_it) == left.cend()) {
auto p = next_var_info[*l_it];
new_var_info.add_var(*r_it, !p || p->is_unused());
new_var_info.add_var(*r_it, edit && (!p || p->is_unused()));
new_left.push_back(*l_it);
new_right.push_back(*r_it);
}
@ -500,7 +500,12 @@ bool Op::compute_used_vars(const CodeBlob& code, bool edit) {
}
changes = (new_var_info.size() == n);
} while (changes <= edit);
assert(left.size() == 1);
bool last = new_var_info.count_used(left) == 0;
new_var_info += left;
if (last) {
new_var_info[left[0]]->flags |= VarDescr::_Last;
}
return set_var_info(std::move(new_var_info));
}
case _Again: {