1// RUN: %clang_analyze_cc1 -std=c++11 -fblocks %s \ 2// RUN: -verify=newdelete \ 3// RUN: -analyzer-checker=core \ 4// RUN: -analyzer-checker=cplusplus.NewDelete 5 6// RUN: %clang_analyze_cc1 -std=c++11 -DLEAKS -fblocks %s \ 7// RUN: -verify=leak \ 8// RUN: -analyzer-checker=core \ 9// RUN: -analyzer-checker=cplusplus.NewDeleteLeaks 10 11// leak-no-diagnostics 12 13// RUN: %clang_analyze_cc1 -std=c++11 -DLEAKS -fblocks %s \ 14// RUN: -verify=mismatch \ 15// RUN: -analyzer-checker=core \ 16// RUN: -analyzer-checker=unix.MismatchedDeallocator 17 18#include "Inputs/system-header-simulator-cxx.h" 19#include "Inputs/system-header-simulator-objc.h" 20 21typedef __typeof__(sizeof(int)) size_t; 22extern "C" void *malloc(size_t); 23extern "C" void *alloca(size_t); 24extern "C" void free(void *); 25 26void testMallocFreeNoWarn() { 27 int *p1 = (int *)malloc(sizeof(int)); 28 free(++p1); // no warn 29 30 int *p2 = (int *)malloc(sizeof(int)); 31 free(p2); 32 free(p2); // no warn 33 34 int *p3 = (int *)malloc(sizeof(int)); // no warn 35 36 int *p4 = (int *)malloc(sizeof(int)); 37 free(p4); 38 int j = *p4; // no warn 39 40 int *p5 = (int *)alloca(sizeof(int)); 41 free(p5); // no warn 42} 43 44void testDeleteMalloced() { 45 int *p1 = (int *)malloc(sizeof(int)); 46 delete p1; 47 // mismatch-warning@-1{{Memory allocated by malloc() should be deallocated by free(), not 'delete'}} 48 49 int *p2 = (int *)__builtin_alloca(sizeof(int)); 50 delete p2; // no warn 51} 52 53void testUseZeroAllocatedMalloced() { 54 int *p1 = (int *)malloc(0); 55 *p1 = 1; // no warn 56} 57 58//----- Test free standard new 59void testFreeOpNew() { 60 void *p = operator new(0); 61 free(p); 62 // mismatch-warning@-1{{Memory allocated by operator new should be deallocated by 'delete', not free()}} 63} 64 65void testFreeNewExpr() { 66 int *p = new int; 67 free(p); 68 // mismatch-warning@-1{{Memory allocated by 'new' should be deallocated by 'delete', not free()}} 69 free(p); 70} 71 72void testObjcFreeNewed() { 73 int *p = new int; 74 NSData *nsdata = [NSData dataWithBytesNoCopy:p length:sizeof(int) freeWhenDone:1]; 75 // mismatch-warning@-1{{+dataWithBytesNoCopy:length:freeWhenDone: cannot take ownership of memory allocated by 'new'}} 76} 77 78void testFreeAfterDelete() { 79 int *p = new int; 80 delete p; 81 free(p); // newdelete-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; // newdelete-warning{{Use of memory after it is freed}} 88} 89