1 // RUN: %clang_cc1 -analyze -analyzer-checker=core,cplusplus.NewDelete,unix.Malloc -std=c++11 -fblocks -verify %s 2 // RUN: %clang_cc1 -analyze -analyzer-checker=core,cplusplus.NewDelete,alpha.cplusplus.NewDeleteLeaks,unix.Malloc -std=c++11 -DLEAKS -fblocks -verify %s 3 #include "Inputs/system-header-simulator-cxx.h" 4 5 #ifndef LEAKS 6 // expected-no-diagnostics 7 #endif 8 9 10 void *allocator(std::size_t size); 11 operator new[](std::size_t size)12 void *operator new[](std::size_t size) throw() { return allocator(size); } operator new(std::size_t size)13 void *operator new(std::size_t size) throw() { return allocator(size); } operator new(std::size_t size,std::nothrow_t & nothrow)14 void *operator new(std::size_t size, std::nothrow_t& nothrow) throw() { return allocator(size); } 15 void *operator new(std::size_t, double d); 16 17 class C { 18 public: 19 void *operator new(std::size_t); 20 }; 21 testNewMethod()22 void testNewMethod() { 23 void *p1 = C::operator new(0); // no warn 24 25 C *p2 = new C; // no warn 26 27 C *c3 = ::new C; 28 } 29 #ifdef LEAKS 30 // expected-warning@-2{{Potential leak of memory pointed to by 'c3'}} 31 #endif 32 testOpNewArray()33 void testOpNewArray() { 34 void *p = operator new[](0); // call is inlined, no warn 35 } 36 testNewExprArray()37 void testNewExprArray() { 38 int *p = new int[0]; 39 } 40 #ifdef LEAKS 41 // expected-warning@-2{{Potential leak of memory pointed to by 'p'}} 42 #endif 43 44 45 //----- Custom non-placement operators testOpNew()46 void testOpNew() { 47 void *p = operator new(0); // call is inlined, no warn 48 } 49 testNewExpr()50 void testNewExpr() { 51 int *p = new int; 52 } 53 #ifdef LEAKS 54 // expected-warning@-2{{Potential leak of memory pointed to by 'p'}} 55 #endif 56 57 58 //----- Custom NoThrow placement operators testOpNewNoThrow()59 void testOpNewNoThrow() { 60 void *p = operator new(0, std::nothrow); 61 } 62 #ifdef LEAKS 63 // expected-warning@-2{{Potential leak of memory pointed to by 'p'}} 64 #endif 65 testNewExprNoThrow()66 void testNewExprNoThrow() { 67 int *p = new(std::nothrow) int; 68 } 69 #ifdef LEAKS 70 // expected-warning@-2{{Potential leak of memory pointed to by 'p'}} 71 #endif 72 73 //----- Custom placement operators testOpNewPlacement()74 void testOpNewPlacement() { 75 void *p = operator new(0, 0.1); // no warn 76 } 77 testNewExprPlacement()78 void testNewExprPlacement() { 79 int *p = new(0.1) int; // no warn 80 } 81