This is being emitted with [GCC 10.2.1](https://packages.debian.org/bullseye/g++-arm-linux-gnueabihf), in some CI jobs: i.e https://github.com/bitcoin/bitcoin/pull/25972/checks?check_run_id=12423693655, or https://github.com/bitcoin/bitcoin/pull/25972/checks?check_run_id=12423693651 (where we actually turn on all our warning flags with depends builds).
```bash
In file included from test/miniscript_tests.cpp:19:
./script/miniscript.h:1197:71: error: comparison of integers of different signs: 'typename iterator_traits<int *>::difference_type' (aka 'int') and 'const uint32_t' (aka 'const unsigned int') [-Werror,-Wsign-compare]
                    return std::count(subs.begin(), subs.end(), true) >= node.k;
                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~
test/miniscript_tests.cpp:346:34: note: in instantiation of function template specialization 'miniscript::Node<CPubKey>::IsSatisfiable<(lambda at test/miniscript_tests.cpp:346:48)>' requested here
        bool satisfiable = node->IsSatisfiable([](const Node&) { return true; });
                                 ^
1 error generated.
```

cc @darosior 
return internal::Parse<typename Ctx::Key>(str, ctx);
}
template<typename Ctx>
inline NodeRef<typename Ctx::Key> FromScript(const CScript& script, const Ctx& ctx) {
    using namespace internal;
    
    if (script.size() > MAX_STANDARD_P2WSH_SCRIPT_SIZE) return {};
    auto decomposed = DecomposeScript(script);
    if (!decomposed) return {};
    auto it = decomposed->begin();
    auto ret = DecodeScript<typename Ctx::Key>(it, decomposed->end(), ctx);
    if (!ret) return {};
    if (it != decomposed->end()) return {};
    return ret;
}
} 
#endif