i-c-e-cxx.cpp revision 0fb97083cc0f8a82e404e22991ae80d2216e71d5 
1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3// C++-specific tests for integral constant expressions.
4
5const int c = 10;
6int ar[c];
7
8struct X0 {
9  static const int value = static_cast<int>(4.0);
10};
11
12void f() {
13  if (const int value = 17) {
14    int array[value];
15  }
16}
17
18int a() {
19  const int t=t; // expected-note {{subexpression not valid}}
20  switch(1) { // expected-warning {{no case matching constant switch condition '1'}}
21    case t:; // expected-error {{not an integer constant expression}}
22  }
23}
24
25// PR6206:  out-of-line definitions are legit
26namespace pr6206 {
27  class Foo {
28  public:
29    static const int kBar;
30  };
31
32  const int Foo::kBar = 20;
33
34  char Test() {
35    char str[Foo::kBar];
36    str[0] = '0';
37    return str[0];
38  }
39}
40
41// PR6373:  default arguments don't count.
42void pr6373(const unsigned x = 0) {
43  unsigned max = 80 / x;
44}
45