clang/test/SemaCXX/undefined-inline.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -triple i686-pc-win32 -verify -std=c++11 %s
   2 // PR14993
   3
   4 namespace test1 {
   5   inline void f();  // expected-warning{{inline function 'test1::f' is not defined}}
   6   void test() { f(); }  // expected-note{{used here}}
   7 }
   8
   9 namespace test2 {
  10   inline int f();
  11   void test() { (void)sizeof(f()); }
  12 }
  13
  14 namespace test3 {
  15   void f();  // expected-warning{{inline function 'test3::f' is not defined}}
  16   inline void f();
  17   void test() { f(); }  // expected-note{{used here}}
  18 }
  19
  20 namespace test4 {
  21   inline void error_on_zero(int);    // expected-warning{{inline function 'test4::error_on_zero' is not defined}}
  22   inline void error_on_zero(char*) {}
  23   void test() { error_on_zero(0); }  // expected-note{{used here}}
  24 }
  25
  26 namespace test5 {
  27   struct X { void f(); };
  28   void test(X &x) { x.f(); }
  29 }
  30
  31 namespace test6 {
  32   struct X { inline void f(); };  // expected-warning{{inline function 'test6::X::f' is not defined}}
  33   void test(X &x) { x.f(); }  // expected-note{{used here}}
  34 }
  35
  36 namespace test7 {
  37   void f();  // expected-warning{{inline function 'test7::f' is not defined}}
  38   void test() { f(); } // no used-here note.
  39   inline void f();
  40 }
  41
  42 namespace test8 {
  43   inline void foo() __attribute__((gnu_inline)); // expected-warning {{'gnu_inline' attribute without 'extern' in C++ treated as externally available, this changed in Clang 10}}
  44   void test() { foo(); }
  45 }
  46
  47 namespace test9 {
  48   void foo();
  49   void test() { foo(); }
  50   inline void foo() __attribute__((gnu_inline)); // expected-warning {{'gnu_inline' attribute without 'extern' in C++ treated as externally available, this changed in Clang 10}}
  51 }
  52
  53 namespace test10 {
  54   inline void foo();
  55   void test() { foo(); }
  56   inline void foo() __attribute__((gnu_inline)); // expected-warning {{'gnu_inline' attribute without 'extern' in C++ treated as externally available, this changed in Clang 10}}
  57 }
  58
  59 namespace test11 {
  60   inline void foo() __attribute__((dllexport));
  61   inline void bar() __attribute__((dllimport));
  62   void test() { foo(); bar(); }
  63 }
  64
  65 namespace test12 {
  66   template<typename> constexpr int _S_chk(int *);
  67   decltype(_S_chk<int>(nullptr)) n;
  68 }