clang/test/CXX/expr/expr.unary/expr.unary.noexcept/sema.cpp

   1 // RUN: %clang_cc1 -fcxx-exceptions -fexceptions -fsyntax-only -verify -std=c++11 -fms-extensions -Wno-delete-incomplete -Wno-unused-value %s
   2 // expected-no-diagnostics
   3
   4 #define P(e) static_assert(noexcept(e), "expected nothrow")
   5 #define N(e) static_assert(!noexcept(e), "expected throw")
   6 #define B(b, e) static_assert(b == noexcept(e), "expectation failed")
   7
   8 void simple() {
   9   P(0);
  10   P(0 + 0);
  11   int i;
  12   P(i);
  13   P(sizeof(0));
  14   P(static_cast<int>(0));
  15   N(throw 0);
  16   N((throw 0, 0));
  17 }
  18
  19 void nospec();
  20 void allspec() throw(...);
  21 void intspec() throw(int);
  22 void emptyspec() throw();
  23 void nothrowattr() __attribute__((nothrow));
  24 void noexcept_true() noexcept;
  25 void noexcept_false() noexcept(false);
  26
  27 void call() {
  28   N(nospec());
  29   N(allspec());
  30   N(intspec());
  31   P(emptyspec());
  32   P(nothrowattr());
  33   P(noexcept_true());
  34   N(noexcept_false());
  35 }
  36
  37 void (*pnospec)();
  38 void (*pallspec)() throw(...);
  39 void (*pintspec)() throw(int);
  40 void (*pemptyspec)() throw();
  41
  42 typedef void (*funcptr)();
  43 funcptr returnsptr() throw();
  44
  45 void callptr() {
  46   N(pnospec());
  47   N((*pnospec)());
  48   N(pallspec());
  49   N((*pallspec)());
  50   N(pintspec());
  51   N((*pintspec)());
  52   P(pemptyspec());
  53   P((*pemptyspec)());
  54   N(returnsptr()());
  55 }
  56
  57 struct S1 {
  58   void nospec();
  59   void allspec() throw(...);
  60   void intspec() throw(int);
  61   void emptyspec() throw();
  62 };
  63
  64 void callmem() {
  65   S1 s;
  66   N(s.nospec());
  67   N(s.allspec());
  68   N(s.intspec());
  69   P(s.emptyspec());
  70 }
  71
  72 void (S1::*mpnospec)();
  73 void (S1::*mpallspec)() throw(...);
  74 void (S1::*mpintspec)() throw(int);
  75 void (S1::*mpemptyspec)() throw();
  76
  77 void callmemptr() {
  78   S1 s;
  79   N((s.*mpnospec)());
  80   N((s.*mpallspec)());
  81   N((s.*mpintspec)());
  82   P((s.*mpemptyspec)());
  83 }
  84
  85 struct S2 {
  86   S2();
  87   S2(int, int) throw();
  88   void operator +();
  89   void operator -() throw();
  90   void operator +(int);
  91   void operator -(int) throw();
  92   operator int();
  93   operator float() throw();
  94 };
  95
  96 void *operator new(__typeof__(sizeof(int)) sz, int) throw();
  97
  98 struct IncompleteStruct;
  99
 100 struct Bad1 {
 101   ~Bad1() throw(int);
 102 };
 103 struct Bad2 {
 104   void operator delete(void*) throw(int);
 105 };
 106
 107 typedef int X;
 108
 109 void implicits() {
 110   N(new int);
 111   P(new (0) int);
 112   P(delete (int*)0);
 113   P(delete (IncompleteStruct*)0);
 114   N(delete (Bad1*)0);
 115   N(delete (Bad2*)0);
 116   N(S2());
 117   P(S2(0, 0));
 118   S2 s;
 119   N(+s);
 120   P(-s);
 121   N(s + 0);
 122   P(s - 0);
 123   N(static_cast<int>(s));
 124   P(static_cast<float>(s));
 125   N(Bad1());
 126   P(X().~X());
 127 }
 128
 129 struct V {
 130   virtual ~V() throw();
 131 };
 132 struct D : V {};
 133
 134 void dyncast() {
 135   V *pv = 0;
 136   D *pd = 0;
 137   P(dynamic_cast<V&>(*pd));
 138   P(dynamic_cast<V*>(pd));
 139   N(dynamic_cast<D&>(*pv));
 140   P(dynamic_cast<D*>(pv));
 141 }
 142
 143 namespace std {
 144   struct type_info {};
 145 }
 146
 147 void idtype() {
 148   P(typeid(V));
 149   P(typeid((V*)0));
 150   P(typeid(*(S1*)0));
 151   N(typeid(*(V*)0));
 152 }
 153
 154 void uneval() {
 155   P(sizeof(typeid(*(V*)0)));
 156   P(typeid(typeid(*(V*)0)));
 157 }
 158
 159 struct G1 {};
 160 struct G2 { int i; };
 161 struct G3 { S2 s; };
 162
 163 void gencon() {
 164   P(G1());
 165   P(G2());
 166   N(G3());
 167 }
 168
 169 template <class T> void f(T&&) noexcept;
 170 template <typename T, bool b>
 171 void late() {
 172   B(b, typeid(*(T*)0));
 173   B(b, T(1));
 174   B(b, static_cast<T>(S2(0, 0)));
 175   B(b, S1() + T());
 176   P(f(T()));
 177   P(new (0) T);
 178   P(delete (T*)0);
 179 }
 180 struct S3 {
 181   virtual ~S3() throw();
 182   S3() throw();
 183   explicit S3(int);
 184   S3(const S2&);
 185 };
 186 template <class T> T&& f2() noexcept;
 187 template <typename T>
 188 void late2() {
 189   P(dynamic_cast<S3&>(f2<T&>()));
 190 }
 191 void operator +(const S1&, float) throw();
 192 void operator +(const S1&, const S3&);
 193 void tlate() {
 194   late<float, true>();
 195   late<S3, false>();
 196   late2<S3>();
 197 }