Incorrect false positive warning emitted by clang-tidy readability-container-size-empty

[adesitter]

Considering:

#include <string_view>

struct Label {
    virtual ~Label();
};

bool operator==(std::string_view, Label const&);

auto f() {
    std::string_view s{"aa"};
    return s == Label{};
}

clang-tidy -checks=readability-container-size-empty emits the following incorrect warning:

<source>:11:12: warning: the 'empty' method should be used to check for emptiness instead of comparing to an empty object [readability-container-size-empty]
   11 |     return s == Label{};
      |            ^~~~~~~~~~~~
      |            s.empty()
/opt/compiler-explorer/gcc-snapshot/lib/gcc/x86_64-linux-gnu/16.0.0/../../../../include/c++/16.0.0/string_view:251:7: note: method 'basic_string_view'::empty() defined here
  251 |       empty() const noexcept
      |       ^
1 warning generated.

compiler explorer

[llvmbot]

@llvm/issue-subscribers-clang-tidy

Author: Arnaud Desitter (adesitter)

Considering: ``` #include <string_view>

struct Label {
virtual ~Label();
};

bool operator==(std::string_view, Label const&);

auto f() {
std::string_view s{"aa"};
return s == Label{};
}

`clang-tidy -checks=readability-container-size-empty` emits the following incorrect warning:

<source>:11:12: warning: the 'empty' method should be used to check for emptiness instead of comparing to an empty object [readability-container-size-empty]
11 | return s == Label{};
| ^~~~~~~~~~~~
| s.empty()
/opt/compiler-explorer/gcc-snapshot/lib/gcc/x86_64-linux-gnu/16.0.0/../../../../include/c++/16.0.0/string_view:251:7: note: method 'basic_string_view'::empty() defined here
251 | empty() const noexcept
| ^
1 warning generated.

[compiler explorer](https://godbolt.org/z/6953xh7d4)
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