<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/106379>106379</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Clang times out compiling simple program. GCC ok.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          socketpair
      </td>
    </tr>
</table>

<pre>
    https://godbolt.org/z/P7K1MTrcb

```cpp
#include <algorithm>
#include <array>
#include <ranges>
#include <string>
#include <vector>

using namespace std;

namespace {
consteval string gen() { return "xxx"; }
class qwe {
 public:
    consteval qwe(const string& str) : s(str.size()) { str.copy(x.data(), s); }
    constexpr operator const vector<char>() const {
        return {x.cbegin(), x.cbegin() + s};
    }

 private:
    // 1048576 is a clang limit
    array<char, 1048576> x{};
    size_t s;
};

}  // namespace

int fun1() {
 const vector<char> v2{qwe(gen())};

    return v2.size();
}
```
</pre>
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