[Bug c++/119020] New: Problem of constexpr static lambda and maybe GCC accepts invalid

[qurong at ios dot ac.cn via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119020

            Bug ID: 119020
           Summary: Problem of constexpr static lambda and maybe GCC
                    accepts invalid
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: qurong at ios dot ac.cn
  Target Milestone: ---

For this program:


```
struct TestClass {
  void testFinction() {}
  static TestClass* ptr_;
  constexpr static auto funcPtr = +[](){ ptr_->testFinction(); };
};

TestClass* TestClass::ptr_ = new TestClass();

int main() {
  return 0;
}

```

This causes an error in clang, but GCC didn't report the error.

Compiler Explorer link: https://godbolt.org/z/x9bYrGqTn