<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/129083>129083</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            std::source_location::function_name is ambiguous with function local types
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

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

<pre>
    https://godbolt.org/z/4jx1dxE3E

```cpp
#include <iostream>
#include <source_location>

template <typename T>
auto PrettyName() -> char const* {
    return std::source_location::current().function_name();
}

void normal() {
 struct A{};
    std::cout << "normal: " << PrettyName<A>() << '\n';
}

struct A;

int main() {
    auto lambda = []{
        struct A{};
        std::cout << "lambda: " << PrettyName<A>() << '\n';
 };

    std::cout << "global: " << PrettyName<A>() << '\n';
 normal();
    lambda();
}
```

clang output:

````none
global: const char *PrettyName() [T = A]
normal: const char *PrettyName() [T = A]
lambda: const char *PrettyName() [T = A]
```

The GCC output is not ambiguous:

```none
global: const char* PrettyName() [with T = A]
normal: const char* PrettyName() [with T = normal()::A]
lambda: const char* PrettyName() [with T = main()::<lambda()>::A]
```

I think it might be an good idea to change `__PRETTY_FUNCTION__` output for function local types to something similar of what GCC does. Its annoying to look into a log file and see a type that exists globally while another function locale type was used. Thats pretty hard to debug.
</pre>
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