clang/test/Parser/cxx0x-for-range.cpp

   1 // RUN: not %clang_cc1 -fsyntax-only -fdiagnostics-parseable-fixits -std=c++11 %s 2>&1 | FileCheck %s
   2
   3 template<typename T, typename U>
   4 struct pair {};
   5
   6 template<typename T, typename U>
   7 struct map {
   8   typedef pair<T,U> *iterator;
   9   iterator begin();
  10   iterator end();
  11 };
  12
  13 template<typename T, typename U>
  14 pair<T,U> &tie(T &, U &);
  15
  16 int foo(map<char*,int> &m) {
  17   char *p;
  18   int n;
  19
  20   for (pair<char*,int> x : m) {
  21     (void)x;
  22   }
  23
  24   for (tie(p, n) : m) { // expected-error {{for range declaration must declare a variable}}
  25     (void)p;
  26     (void)n;
  27   }
  28
  29   return n;
  30 }
  31
  32 namespace PR19176 {
  33 struct Vector {
  34   struct iterator {
  35     int &operator*();
  36     iterator &operator++();
  37     iterator &operator++(int);
  38     bool operator==(const iterator &) const;
  39   };
  40   iterator begin();
  41   iterator end();
  42 };
  43
  44 void f() {
  45   Vector v;
  46   int a[] = {1, 2, 3, 4};
  47   for (auto foo   =     a) // expected-error {{range-based 'for' statement uses ':', not '='}}
  48     // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:19-[[@LINE-1]]:20}:":"
  49     (void)foo;
  50   for (auto i
  51       =
  52       v) // expected-error@-1 {{range-based 'for' statement uses ':', not '='}}
  53     // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:7-[[@LINE-2]]:8}:":"
  54     (void)i;
  55 #define FORRANGE(v, a) for (DECLVARWITHINIT(v) a)  // expected-note {{expanded from macro}}
  56 #define DECLAUTOVAR(v) auto v
  57 #define DECLVARWITHINIT(v) DECLAUTOVAR(v) =  // expected-note {{expanded from macro}}
  58   FORRANGE(i, a) {  // expected-error {{range-based 'for' statement uses ':', not '='}}
  59
  60   }
  61 }
  62 }