new-delete.cpp revision 6bc574daab3d3571d888cc4a21df67f2e2a14792
1// RUN: %clang_cc1 -fsyntax-only -verify %s 2 3#include <stddef.h> 4 5struct S // expected-note {{candidate}} 6{ 7 S(int, int, double); // expected-note {{candidate}} 8 S(double, int); // expected-note 2 {{candidate}} 9 S(float, int); // expected-note 2 {{candidate}} 10}; 11struct T; // expected-note{{forward declaration of 'T'}} 12struct U 13{ 14 // A special new, to verify that the global version isn't used. 15 void* operator new(size_t, S*); // expected-note {{candidate}} 16}; 17struct V : U 18{ 19}; 20 21// PR5823 22void* operator new(const size_t); // expected-note 2 {{candidate}} 23void* operator new(size_t, int*); // expected-note 3 {{candidate}} 24void* operator new(size_t, float*); // expected-note 3 {{candidate}} 25void* operator new(size_t, S); // expected-note 2 {{candidate}} 26 27struct foo { }; 28 29void good_news() 30{ 31 int *pi = new int; 32 float *pf = new (pi) float(); 33 pi = new int(1); 34 pi = new int('c'); 35 const int *pci = new const int(); 36 S *ps = new S(1, 2, 3.4); 37 ps = new (pf) (S)(1, 2, 3.4); 38 S *(*paps)[2] = new S*[*pi][2]; 39 typedef int ia4[4]; 40 ia4 *pai = new (int[3][4]); 41 pi = ::new int; 42 U *pu = new (ps) U; 43 V *pv = new (ps) V; 44 45 pi = new (S(1.0f, 2)) int; 46 47 (void)new int[true]; 48 49 // PR7147 50 typedef int a[2]; 51 foo* f1 = new foo; 52 foo* f2 = new foo[2]; 53 typedef foo x[2]; 54 typedef foo y[2][2]; 55 x* f3 = new y; 56} 57 58struct abstract { 59 virtual ~abstract() = 0; 60}; 61 62void bad_news(int *ip) 63{ 64 int i = 1; 65 (void)new; // expected-error {{missing type specifier}} 66 (void)new 4; // expected-error {{missing type specifier}} 67 (void)new () int; // expected-error {{expected expression}} 68 (void)new int[1.1]; // expected-error {{array size expression must have integral or enumerated type, not 'double'}} 69 (void)new int[1][i]; // expected-error {{only the first dimension}} 70 (void)new (int[1][i]); // expected-error {{only the first dimension}} 71 (void)new (int[i]); // expected-error {{when type is in parentheses}} 72 (void)new int(*(S*)0); // expected-error {{no viable conversion from 'S' to 'int'}} 73 (void)new int(1, 2); // expected-error {{excess elements in scalar initializer}} 74 (void)new S(1); // expected-error {{no matching constructor}} 75 (void)new S(1, 1); // expected-error {{call to constructor of 'S' is ambiguous}} 76 (void)new const int; // expected-error {{default initialization of an object of const type 'int const'}} 77 (void)new float*(ip); // expected-error {{cannot initialize a new value of type 'float *' with an lvalue of type 'int *'}} 78 // Undefined, but clang should reject it directly. 79 (void)new int[-1]; // expected-error {{array size is negative}} 80 (void)new int[*(S*)0]; // expected-error {{array size expression must have integral or enumerated type, not 'S'}} 81 (void)::S::new int; // expected-error {{expected unqualified-id}} 82 (void)new (0, 0) int; // expected-error {{no matching function for call to 'operator new'}} 83 (void)new (0L) int; // expected-error {{call to 'operator new' is ambiguous}} 84 // This must fail, because the member version shouldn't be found. 85 (void)::new ((S*)0) U; // expected-error {{no matching function for call to 'operator new'}} 86 // This must fail, because any member version hides all global versions. 87 (void)new U; // expected-error {{no matching function for call to 'operator new'}} 88 (void)new (int[]); // expected-error {{array size must be specified in new expressions}} 89 (void)new int&; // expected-error {{cannot allocate reference type 'int &' with new}} 90 // Some lacking cases due to lack of sema support. 91} 92 93void good_deletes() 94{ 95 delete (int*)0; 96 delete [](int*)0; 97 delete (S*)0; 98 ::delete (int*)0; 99} 100 101void bad_deletes() 102{ 103 delete 0; // expected-error {{cannot delete expression of type 'int'}} 104 delete [0] (int*)0; // expected-error {{expected ']'}} \ 105 // expected-note {{to match this '['}} 106 delete (void*)0; // expected-warning {{cannot delete expression with pointer-to-'void' type 'void *'}} 107 delete (T*)0; // expected-warning {{deleting pointer to incomplete type}} 108 ::S::delete (int*)0; // expected-error {{expected unqualified-id}} 109} 110 111struct X0 { }; 112 113struct X1 { 114 operator int*(); 115 operator float(); 116}; 117 118struct X2 { 119 operator int*(); // expected-note {{candidate function}} 120 operator float*(); // expected-note {{candidate function}} 121}; 122 123void test_delete_conv(X0 x0, X1 x1, X2 x2) { 124 delete x0; // expected-error{{cannot delete}} 125 delete x1; 126 delete x2; // expected-error{{ambiguous conversion of delete expression of type 'X2' to a pointer}} 127} 128 129// PR4782 130class X3 { 131public: 132 static void operator delete(void * mem, size_t size); 133}; 134 135class X4 { 136public: 137 static void release(X3 *x); 138 static void operator delete(void * mem, size_t size); 139}; 140 141 142void X4::release(X3 *x) { 143 delete x; 144} 145 146class X5 { 147public: 148 void Destroy() const { delete this; } 149}; 150 151class Base { 152public: 153 static void *operator new(signed char) throw(); // expected-error {{'operator new' takes type size_t}} 154 static int operator new[] (size_t) throw(); // expected-error {{operator new[]' must return type 'void *'}} 155}; 156 157class Tier {}; 158class Comp : public Tier {}; 159 160class Thai : public Base { 161public: 162 Thai(const Tier *adoptDictionary); 163}; 164 165void loadEngineFor() { 166 const Comp *dict; 167 new Thai(dict); 168} 169 170template <class T> struct TBase { 171 void* operator new(T size, int); // expected-error {{'operator new' cannot take a dependent type as first parameter; use size_t}} 172}; 173 174TBase<int> t1; 175 176class X6 { 177public: 178 static void operator delete(void*, int); // expected-note {{member found by ambiguous name lookup}} 179}; 180 181class X7 { 182public: 183 static void operator delete(void*, int); // expected-note {{member found by ambiguous name lookup}} 184}; 185 186class X8 : public X6, public X7 { 187}; 188 189void f(X8 *x8) { 190 delete x8; // expected-error {{member 'operator delete' found in multiple base classes of different types}} 191} 192 193class X9 { 194public: 195 static void operator delete(void*, int); // expected-note {{'operator delete' declared here}} 196 static void operator delete(void*, float); // expected-note {{'operator delete' declared here}} 197}; 198 199void f(X9 *x9) { 200 delete x9; // expected-error {{no suitable member 'operator delete' in 'X9'}} 201} 202 203struct X10 { 204 virtual ~X10(); 205}; 206 207struct X11 : X10 { // expected-error {{no suitable member 'operator delete' in 'X11'}} 208 void operator delete(void*, int); // expected-note {{'operator delete' declared here}} 209}; 210 211void f() { 212 X11 x11; // expected-note {{implicit default destructor for 'X11' first required here}} 213} 214 215struct X12 { 216 void* operator new(size_t, void*); 217}; 218 219struct X13 : X12 { 220 using X12::operator new; 221}; 222 223static void* f(void* g) 224{ 225 return new (g) X13(); 226} 227 228class X14 { 229public: 230 static void operator delete(void*, const size_t); 231}; 232 233void f(X14 *x14a, X14 *x14b) { 234 delete x14a; 235} 236 237namespace PR5918 { // Look for template operator new overloads. 238 struct S { template<typename T> static void* operator new(size_t, T); }; 239 void test() { 240 (void)new(0) S; 241 } 242} 243 244namespace Test1 { 245 246void f() { 247 (void)new int[10](1, 2); // expected-error {{array 'new' cannot have initialization arguments}} 248 249 typedef int T[10]; 250 (void)new T(1, 2); // expected-error {{array 'new' cannot have initialization arguments}} 251} 252 253template<typename T> 254void g(unsigned i) { 255 (void)new T[1](i); // expected-error {{array 'new' cannot have initialization arguments}} 256} 257 258template<typename T> 259void h(unsigned i) { 260 (void)new T(i); // expected-error {{array 'new' cannot have initialization arguments}} 261} 262template void h<unsigned>(unsigned); 263template void h<unsigned[10]>(unsigned); // expected-note {{in instantiation of function template specialization 'Test1::h<unsigned int [10]>' requested here}} 264 265} 266 267// Don't diagnose access for overload candidates that aren't selected. 268namespace PR7436 { 269struct S1 { 270 void* operator new(size_t); 271 void operator delete(void* p); 272 273private: 274 void* operator new(size_t, void*); // expected-note {{declared private here}} 275 void operator delete(void*, void*); 276}; 277class S2 { 278 void* operator new(size_t); // expected-note {{declared private here}} 279 void operator delete(void* p); // expected-note {{declared private here}} 280}; 281 282void test(S1* s1, S2* s2) { 283 delete s1; 284 delete s2; // expected-error {{is a private member}} 285 (void)new S1(); 286 (void)new (0L) S1(); // expected-error {{is a private member}} 287 (void)new S2(); // expected-error {{is a private member}} 288} 289} 290 291