clang/test/CodeGenCXX/rtti-linkage.cpp

   1 // RUN: %clang_cc1 %std_cxx98- %s -I%S -triple=x86_64-apple-darwin10 -emit-llvm -Wno-dynamic-exception-spec -o - | FileCheck %s -check-prefixes=CHECK,CHECK-BOTH
   2 // RUN: %clang_cc1 %std_cxx98- %s -I%S -triple=x86_64-apple-darwin10 -emit-llvm -Wno-dynamic-exception-spec -fvisibility=hidden -o - | FileCheck %s --check-prefixes=CHECK-WITH-HIDDEN,CHECK-BOTH
   3
   4 #include <typeinfo>
   5
   6 // CHECK-BOTH: _ZTSP1C = internal constant
   7 // CHECK-BOTH: _ZTS1C = internal constant
   8 // CHECK-BOTH: _ZTI1C = internal constant
   9 // CHECK-BOTH: _ZTIP1C = internal constant
  10 // CHECK-BOTH: _ZTSPP1C = internal constant
  11 // CHECK-BOTH: _ZTIPP1C = internal constant
  12 // CHECK-BOTH: _ZTSM1Ci = internal constant
  13 // CHECK-BOTH: _ZTIM1Ci = internal constant
  14 // CHECK-BOTH: _ZTSPM1Ci = internal constant
  15 // CHECK-BOTH: _ZTIPM1Ci = internal constant
  16 // CHECK-BOTH: _ZTSM1CS_ = internal constant
  17 // CHECK-BOTH: _ZTIM1CS_ = internal constant
  18 // CHECK-BOTH: _ZTSM1CPS_ = internal constant
  19 // CHECK-BOTH: _ZTIM1CPS_ = internal constant
  20 // CHECK-BOTH: _ZTSM1A1C = internal constant
  21 // CHECK: _ZTS1A = linkonce_odr constant
  22 // CHECK-WITH-HIDDEN: _ZTS1A = linkonce_odr hidden constant
  23 // CHECK: _ZTI1A = linkonce_odr constant
  24 // CHECK-WITH-HIDDEN: _ZTI1A = linkonce_odr hidden constant
  25 // CHECK-BOTH: _ZTIM1A1C = internal constant
  26 // CHECK-BOTH: _ZTSM1AP1C = internal constant
  27 // CHECK-BOTH: _ZTIM1AP1C = internal constant
  28
  29 // CHECK-WITH-HIDDEN: _ZTSFN12_GLOBAL__N_11DEvE = internal constant
  30 // CHECK-WITH-HIDDEN: @_ZTSPK2T4 = linkonce_odr hidden constant
  31 // CHECK-WITH-HIDDEN: @_ZTS2T4 = linkonce_odr hidden constant
  32 // CHECK-WITH-HIDDEN: @_ZTI2T4 = linkonce_odr hidden constant
  33 // CHECK-WITH-HIDDEN: @_ZTIPK2T4 = linkonce_odr hidden constant
  34 // CHECK-WITH-HIDDEN: @_ZTSZ2t5vE1A = internal constant
  35 // CHECK-WITH-HIDDEN: @_ZTIZ2t5vE1A = internal constant
  36 // CHECK-WITH-HIDDEN: @_ZTSZ2t6vE1A = linkonce_odr hidden constant
  37 // CHECK-WITH-HIDDEN: @_ZTIZ2t6vE1A = linkonce_odr hidden constant
  38 // CHECK-WITH-HIDDEN: @_ZTSPZ2t7vE1A = linkonce_odr hidden constant
  39 // CHECK-WITH-HIDDEN: @_ZTSZ2t7vE1A = linkonce_odr hidden constant
  40 // CHECK-WITH-HIDDEN: @_ZTIZ2t7vE1A = linkonce_odr hidden constant
  41 // CHECK-WITH-HIDDEN: @_ZTIPZ2t7vE1A = linkonce_odr hidden constant
  42
  43 // CHECK: _ZTSN12_GLOBAL__N_11DE = internal constant
  44 // CHECK: _ZTIN12_GLOBAL__N_11DE = internal constant
  45 // CHECK: _ZTSPN12_GLOBAL__N_11DE = internal constant
  46 // CHECK: _ZTIPN12_GLOBAL__N_11DE = internal constant
  47 // CHECK: _ZTSFN12_GLOBAL__N_11DEvE = internal constant
  48 // CHECK: _ZTIFN12_GLOBAL__N_11DEvE = internal constant
  49 // CHECK: _ZTSFvN12_GLOBAL__N_11DEE = internal constant
  50 // CHECK: _ZTIFvN12_GLOBAL__N_11DEE = internal constant
  51 // CHECK: _ZTSPFvvE = linkonce_odr constant
  52 // CHECK: _ZTSFvvE = linkonce_odr constant
  53 // CHECK: _ZTIFvvE = linkonce_odr constant
  54 // CHECK: _ZTIPFvvE = linkonce_odr constant
  55 // CHECK: _ZTSN12_GLOBAL__N_11EE = internal constant
  56 // CHECK: _ZTIN12_GLOBAL__N_11EE = internal constant
  57 // CHECK: _ZTSA10_i = linkonce_odr constant
  58 // CHECK: _ZTIA10_i = linkonce_odr constant
  59 // CHECK: _ZTI1TILj0EE = linkonce_odr constant
  60 // CHECK: _ZTI1TILj1EE = weak_odr constant
  61 // CHECK: _ZTI1TILj2EE = external constant
  62 // CHECK: _ZTSZ2t5vE1A = internal constant
  63 // CHECK: _ZTIZ2t5vE1A = internal constant
  64 // CHECK: _ZTS1B ={{.*}} constant
  65 // CHECK: _ZTI1B ={{.*}} constant
  66 // CHECK: _ZTS1F = linkonce_odr constant
  67 // CHECK: _ZTSZ2t6vE1A = linkonce_odr constant
  68 // CHECK: _ZTIZ2t6vE1A = linkonce_odr constant
  69 // CHECK: _ZTSPZ2t7vE1A = linkonce_odr constant
  70 // CHECK: _ZTSZ2t7vE1A = linkonce_odr constant
  71 // CHECK: _ZTIZ2t7vE1A = linkonce_odr constant
  72 // CHECK: _ZTIPZ2t7vE1A = linkonce_odr constant
  73
  74 // CHECK: _ZTIN12_GLOBAL__N_11DE
  75
  76 // A has no key function, so its RTTI data should be linkonce_odr.
  77 struct A { };
  78
  79 // B has a key function defined in the translation unit, so the RTTI data should
  80 // be emitted in this translation unit and have external linkage.
  81 struct B : A {
  82   virtual void f();
  83 };
  84 void B::f() { }
  85
  86 // C is an incomplete class type, so any direct or indirect pointer types should have
  87 // internal linkage, as should the type info for C itself.
  88 struct C;
  89
  90 void t1() {
  91   (void)typeid(C*);
  92   (void)typeid(C**);
  93   (void)typeid(int C::*);
  94   (void)typeid(int C::**);
  95   (void)typeid(C C::*);
  96   (void)typeid(C *C::*);
  97   (void)typeid(C A::*);
  98   (void)typeid(C* A::*);
  99 }
 100
 101 namespace {
 102   // D is inside an anonymous namespace, so all type information related to D should have
 103   // internal linkage.
 104   struct D { };
 105
 106   // E is also inside an anonymous namespace.
 107   enum E { };
 108
 109 };
 110
 111 // F has a key function defined in the translation unit, but it is inline so the RTTI
 112 // data should be emitted with linkonce_odr linkage.
 113 struct F {
 114   virtual void f();
 115 };
 116
 117 inline void F::f() { }
 118 const D getD();
 119
 120 const std::type_info &t2() {
 121   (void)typeid(const D);
 122   (void)typeid(D *);
 123   (void)typeid(D (*)());
 124   (void)typeid(void (*)(D));
 125   (void)typeid(void (*)(D&));
 126   // The exception specification is not part of the RTTI descriptor, so it should not have
 127   // internal linkage.
 128   (void)typeid(void (*)() throw (D));
 129
 130   (void)typeid(E);
 131
 132   return typeid(getD());
 133 }
 134
 135 namespace Arrays {
 136   struct A {
 137     static const int a[10];
 138   };
 139   const std::type_info &f() {
 140     return typeid(A::a);
 141   }
 142 }
 143
 144 template <unsigned N> class T {
 145   virtual void anchor() {}
 146 };
 147 template class T<1>;
 148 template <> class T<2> { virtual void anchor(); };
 149 void t3() {
 150   (void) typeid(T<0>);
 151   (void) typeid(T<1>);
 152   (void) typeid(T<2>);
 153 }
 154
 155 struct T4 {};
 156 void t4(const T4 *ptr) {
 157   const void *value = &typeid(ptr);
 158 }
 159
 160 void t5() {
 161   struct A {};
 162   const void *value = &typeid(A);
 163 }
 164
 165 inline void t6() {
 166   struct A {};
 167   const void *value = &typeid(A);
 168 }
 169 void t6_helper() {
 170   t6();
 171 }
 172
 173 inline void t7() {
 174   struct A {};
 175   const void *value = &typeid(A*);
 176 }
 177 void t7_helper() {
 178   t7();
 179 }