1 // RUN: %clang_cc1 -std=c++2a -verify %s
2
3 template<int N> struct A {};
4
5 using F = bool(*)(int);
6 extern F *p;
7 extern int m;
8
9 struct Convertible { template<typename T> operator T(); };
10
f()11 void f() {
12 int arr1[3];
13 for (int n = 5; int x : arr1) {}
14
15 int A<0>::*arr2[3];
16 for (int n = 5; int A<true ? 0 : 1>::*x : arr2) {}
17
18 for (int i = 0; int x = i < 2 ? 1 : 0; i++) {}
19
20 F (*arr3[3])(int);
21 for (int n = 5; F (*p)(int n) : arr3) {}
22 for (int n = 5; F (*p)(int (n)) : arr3) {}
23
24 // Here, we have a declaration rather than an expression.
25 for (int n = 5; F (*p)(int (n)); ++n) {}
26
27 // We detect whether we have a for-range-declaration before parsing so that
28 // we can give different diagnostics for for-range-declarations versus
29 // conditions (even though the rules are currently identical).
30 Convertible arr4[3];
31 for (int n = 0; struct { operator bool(); } x = {}; ++n) {} // expected-error {{cannot be defined in a condition}}
32 for (int n = 0; struct { operator bool(); } x : arr4) {} // expected-error {{may not be defined in a for range declaration}}
33
34 for (int n = 0; static int m = 0; ++n) {} // expected-error {{type name does not allow storage class}}
35 for (int n = 0; static int m : arr1) {} // expected-error {{loop variable 'm' may not be declared 'static'}}
36
37 // The init-statement and range are not break / continue scopes. (But the body is.)
38 for (int n = ({ break; 0; }); int m : arr1) {} // expected-error {{not in loop}}
39 for (int n = ({ continue; 0; }); int m : arr1) {} // expected-error {{not in loop}}
40 for (int arr[3]; int n : *({ break; &arr; })) {} // expected-error {{not in loop}}
41 for (int arr[3]; int n : *({ continue; &arr; })) {} // expected-error {{not in loop}}
42 for (int n = 0; int m : arr1) { break; }
43 for (int n = 0; int m : arr1) { continue; }
44 }
45