clang/test/Analysis/NewDelete-custom.cpp

   1 // RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDelete,cplusplus.NewDeleteLeaks,unix.Malloc -std=c++11 -fblocks -verify %s
   2 // RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDelete,cplusplus.NewDeleteLeaks,unix.Malloc -std=c++11 -fblocks -verify %s -analyzer-config c++-allocator-inlining=false
   3 #include "Inputs/system-header-simulator-cxx.h"
   4
   5 // expected-no-diagnostics
   6
   7
   8 void *allocator(std::size_t size);
   9
  10 void *operator new[](std::size_t size) throw() { return allocator(size); }
  11 void *operator new(std::size_t size) throw() { return allocator(size); }
  12 void *operator new(std::size_t size, const std::nothrow_t &nothrow) throw() { return allocator(size); }
  13 void *operator new(std::size_t, double d);
  14
  15 class C {
  16 public:
  17   void *operator new(std::size_t);
  18 };
  19
  20 void testNewMethod() {
  21   void *p1 = C::operator new(0); // no warn
  22
  23   C *p2 = new C; // no-warning
  24
  25   C *c3 = ::new C; // no-warning
  26 }
  27
  28 void testOpNewArray() {
  29   void *p = operator new[](0); // call is inlined, no warn
  30 }
  31
  32 void testNewExprArray() {
  33   int *p = new int[0]; // no-warning
  34 }
  35
  36
  37 //----- Custom non-placement operators
  38 void testOpNew() {
  39   void *p = operator new(0); // call is inlined, no warn
  40 }
  41
  42 void testNewExpr() {
  43   int *p = new int; // no-warning
  44 }
  45
  46 //----- Custom NoThrow placement operators
  47 void testOpNewNoThrow() {
  48   void *p = operator new(0, std::nothrow); // call is inlined, no warn
  49 }
  50
  51 void testNewExprNoThrow() {
  52   int *p = new(std::nothrow) int; // no-warning
  53 }
  54
  55 //----- Custom placement operators
  56 void testOpNewPlacement() {
  57   void *p = operator new(0, 0.1); // no warn
  58 }
  59
  60 void testNewExprPlacement() {
  61   int *p = new(0.1) int; // no warn
  62 }