[Bug c++/95451] [8/9/10/11 regression] ICE for lambda capturing this and calling operator() since r8-2720-gf44a8dd56f5bfbd0

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95451

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
We indeed ICE on:
struct A {
  template<typename>
  void foo() {
    [this](auto) { operator()(); }(0);
  }
  void operator()() {}
};

int main() {
  A{}.foo<void>();
}
accept:
struct A {
  template<typename>
  void foo() {
    [this](int) { operator()(); }(0);
  }
  void operator()() {}
};

int main() {
  A{}.foo<int>();
}
and reject:
struct A {
  void foo() {
    [this](auto) { operator()(); }(0);
  }
  void operator()() {}
};

int main() {
  A{}.foo();
}
while clang++ accepts all 3. With this->operator()() instead of operator()()
all 3 are accepted too indeed.