1// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDelete -std=c++11 -fblocks -verify %s
2// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDelete,cplusplus.NewDeleteLeaks -std=c++11 -DLEAKS -fblocks -verify %s
3// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDelete -std=c++11 -fblocks -DTEST_INLINABLE_ALLOCATORS -verify %s
4// RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDelete,cplusplus.NewDeleteLeaks -std=c++11 -DLEAKS -fblocks -DTEST_INLINABLE_ALLOCATORS -verify %s
5#include "Inputs/system-header-simulator-cxx.h"
6#include "Inputs/system-header-simulator-objc.h"
7
8typedef __typeof__(sizeof(int)) size_t;
9extern "C" void *malloc(size_t);
10extern "C" void *alloca(size_t);
11extern "C" void free(void *);
12
13//----------------------------------------------------------------------------
14// Check for intersections with unix.Malloc and unix.MallocWithAnnotations
15// checkers bounded with cplusplus.NewDelete.
16//----------------------------------------------------------------------------
17
18//----- malloc()/free() are subjects of unix.Malloc and unix.MallocWithAnnotations
19void testMallocFreeNoWarn() {
20  int i;
21  free(&i); // no warn
22
23  int *p1 = (int *)malloc(sizeof(int));
24  free(++p1); // no warn
25
26  int *p2 = (int *)malloc(sizeof(int));
27  free(p2);
28  free(p2); // no warn
29
30  int *p3 = (int *)malloc(sizeof(int)); // no warn
31
32  int *p4 = (int *)malloc(sizeof(int));
33  free(p4);
34  int j = *p4; // no warn
35
36  int *p5 = (int *)alloca(sizeof(int));
37  free(p5); // no warn
38}
39
40void testDeleteMalloced() {
41  int *p1 = (int *)malloc(sizeof(int));
42  delete p1; // no warn
43
44  int *p2 = (int *)__builtin_alloca(sizeof(int));
45  delete p2; // no warn
46}
47
48void testUseZeroAllocatedMalloced() {
49  int *p1 = (int *)malloc(0);
50  *p1 = 1; // no warn
51}
52
53//----- Test free standard new
54void testFreeOpNew() {
55  void *p = operator new(0);
56  free(p);
57}
58#ifdef LEAKS
59// expected-warning@-2 {{Potential leak of memory pointed to by 'p'}}
60#endif
61
62void testFreeNewExpr() {
63  int *p = new int;
64  free(p);
65}
66#ifdef LEAKS
67// expected-warning@-2 {{Potential leak of memory pointed to by 'p'}}
68#endif
69
70void testObjcFreeNewed() {
71  int *p = new int;
72  NSData *nsdata = [NSData dataWithBytesNoCopy:p length:sizeof(int) freeWhenDone:1];
73#ifdef LEAKS
74  // expected-warning@-2 {{Potential leak of memory pointed to by 'p'}}
75#endif
76}
77
78void testFreeAfterDelete() {
79  int *p = new int;
80  delete p;
81  free(p); // expected-warning{{Use of memory after it is freed}}
82}
83
84void testStandardPlacementNewAfterDelete() {
85  int *p = new int;
86  delete p;
87  p = new(p) int; // expected-warning{{Use of memory after it is freed}}
88}
89