test/SemaCXX/expressions.cpp

// RUN: %clang_cc1 -fsyntax-only -verify %s 

void choice(int);
int choice(bool);

void test() {
  // Result of ! must be type bool.
  int i = choice(!1);
}

// rdar://8018252
void f0() {
  extern void f0_1(int*);
  register int x;
  f0_1(&x);
}

namespace test1 {
  template <class T> void bar(T &x) { T::fail(); }
  template <class T> void bar(volatile T &x) {}

  void test_ints() {
    volatile int x;
    bar(x = 5);
    bar(x += 5);
  }

  enum E { E_zero };
  void test_enums() {
    volatile E x;
    bar(x = E_zero);
    bar(x += E_zero); // expected-error {{incompatible type}}
  }
}

int test2(int x) {
  return x && 4; // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}

  return x && sizeof(int) == 4;  // no warning, RHS is logical op.
  return x && true;
  return x && false;
  return x || true;
  return x || false;

  return x && (unsigned)0; // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}

  return x || (unsigned)1; // expected-warning {{use of logical || with constant operand; switch to bitwise | or remove constant}}

  return x || 0; // expected-warning {{use of logical || with constant operand; switch to bitwise | or remove constant}}
  return x || 1; // expected-warning {{use of logical || with constant operand; switch to bitwise | or remove constant}}
  return x || -1; // expected-warning {{use of logical || with constant operand; switch to bitwise | or remove constant}}
  return x || 5; // expected-warning {{use of logical || with constant operand; switch to bitwise | or remove constant}}
  return x && 0; // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}
  return x && 1; // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}
  return x && -1; // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}
  return x && 5; // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}
  return x || (0); // expected-warning {{use of logical || with constant operand; switch to bitwise | or remove constant}}
  return x || (1); // expected-warning {{use of logical || with constant operand; switch to bitwise | or remove constant}}
  return x || (-1); // expected-warning {{use of logical || with constant operand; switch to bitwise | or remove constant}}
  return x || (5); // expected-warning {{use of logical || with constant operand; switch to bitwise | or remove constant}}
  return x && (0); // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}
  return x && (1); // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}
  return x && (-1); // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}
  return x && (5); // expected-warning {{use of logical && with constant operand; switch to bitwise & or remove constant}}
}