clang/test/SemaCXX/cxx98-compat-flags.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -std=c++17 -Wc++98-compat-pedantic -verify %s
   2 // RUN: %clang_cc1 -fsyntax-only -std=c++17 -Wc++98-compat-pedantic -Wno-bind-to-temporary-copy -Wno-unnamed-type-template-args -Wno-local-type-template-args -Wno-binary-literal -Werror %s
   3
   4 template<typename T> int TemplateFn(T) { return 0; }
   5 void LocalTemplateArg() {
   6   struct S {};
   7   TemplateFn(S()); // expected-warning {{local type 'S' as template argument is incompatible with C++98}}
   8 }
   9 struct {} obj_of_unnamed_type; // expected-note {{here}}
  10 int UnnamedTemplateArg = TemplateFn(obj_of_unnamed_type); // expected-warning {{unnamed type as template argument is incompatible with C++98}}
  11
  12 namespace CopyCtorIssues {
  13   struct Private {
  14     Private();
  15   private:
  16     Private(const Private&); // expected-note {{declared private here}}
  17   };
  18   struct NoViable {
  19     NoViable(); // expected-note {{not viable}}
  20     NoViable(NoViable&); // expected-note {{not viable}}
  21   };
  22   struct Ambiguous {
  23     Ambiguous();
  24     Ambiguous(const Ambiguous &, int = 0); // expected-note {{candidate}}
  25     Ambiguous(const Ambiguous &, double = 0); // expected-note {{candidate}}
  26   };
  27   struct Deleted {
  28     Private p; // expected-note {{copy constructor of 'Deleted' is implicitly deleted because field 'p' has an inaccessible copy constructor}}
  29   };
  30
  31   const Private &a = Private(); // expected-warning {{copying variable of type 'Private' when binding a reference to a temporary would invoke an inaccessible constructor in C++98}}
  32   const NoViable &b = NoViable(); // expected-warning {{copying variable of type 'NoViable' when binding a reference to a temporary would find no viable constructor in C++98}}
  33   const Ambiguous &c = Ambiguous(); // expected-warning {{copying variable of type 'Ambiguous' when binding a reference to a temporary would find ambiguous constructors in C++98}}
  34   const Deleted &d = Deleted(); // expected-warning {{copying variable of type 'Deleted' when binding a reference to a temporary would invoke a deleted constructor in C++98}}
  35
  36   int n = 0b00100101001; // expected-warning {{binary integer literals are incompatible with C++ standards before C++14}}
  37 }