// RUN: %clang_cc1 -verify -fsyntax-only -std=c++2b -Wshadow-all %s

namespace GH95707 {
struct Foo {
  int a; // expected-note 2 {{previous declaration is here}}

  void f1(this auto &self, int a) { self.a = a; }
  void f2(int a) { } // expected-warning {{declaration shadows a field of 'GH95707::Foo'}}
  void f3() {
    (void)[&](this auto &self, int a) { }; // expected-warning {{declaration shadows a field of 'GH95707::Foo'}}
  }
};
} // namespace GH95707

namespace GH163731 {
struct S1 {
  int a;
  void m(this S1 &self) {
    auto lambda = [](int a) { return a; };
  }
};

struct S2 {
  int a;
  void m(this S2 &self) {
    int a = 1;                // expected-note {{previous declaration is here}}
    auto lambda = [](int a) { // expected-warning {{declaration shadows a local variable}}
      return a;
    };
  }
};

struct S3 {
  int a;
  void m(this S3 &self) {
    auto lambda = [self](int a) { return a + self.a; };
  }
};
}