clang/test/SemaCXX/for-range-no-std.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11
   2 // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++98 -Wno-c++11-extensions
   3
   4 struct S {
   5   int *begin();
   6   int *end();
   7 };
   8
   9 struct T {
  10 };
  11
  12 struct Range {};
  13 int begin(Range); // expected-note {{not viable}}
  14 int end(Range);
  15
  16 namespace NS {
  17   struct ADL {};
  18   struct iter {
  19     int operator*();
  20     bool operator!=(iter);
  21     void operator++();
  22   };
  23   iter begin(ADL); // expected-note {{not viable}}
  24   iter end(ADL);
  25
  26   struct NoADL {};
  27 }
  28 NS::iter begin(NS::NoADL); // expected-note {{not viable}}
  29 NS::iter end(NS::NoADL);
  30
  31 void f() {
  32   int a[] = {1, 2, 3};
  33   for (auto b : S()) {} // ok
  34   for (auto b : T()) {} // expected-error {{invalid range expression of type 'T'}}
  35   for (auto b : a) {} // ok
  36   for (int b : NS::ADL()) {} // ok
  37   for (int b : NS::NoADL()) {} // expected-error {{invalid range expression of type 'NS::NoADL'}}
  38 }
  39
  40 void PR11601() {
  41   void (*vv[])() = {PR11601, PR11601, PR11601};
  42   for (void (*i)() : vv) i();
  43 }