45 lines · cpp
1// RUN: %clang_cc1 -std=c++2a -verify %s2 3template<int N> struct A {};4 5using F = bool(*)(int);6extern F *p;7extern int m;8 9struct Convertible { template<typename T> operator T(); };10 11void 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 that28 // we can give different diagnostics for for-range-declarations versus29 // 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