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// RUN: %clang_analyze_cc1 -std=c++11 -fblocks %s \
// RUN: -verify=newdelete \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=cplusplus.NewDelete
// RUN: %clang_analyze_cc1 -std=c++11 -DLEAKS -fblocks %s \
// RUN: -verify=leak \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=cplusplus.NewDeleteLeaks
// leak-no-diagnostics
// RUN: %clang_analyze_cc1 -std=c++11 -DLEAKS -fblocks %s \
// RUN: -verify=mismatch \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=unix.MismatchedDeallocator
#include "Inputs/system-header-simulator-cxx.h"
#include "Inputs/system-header-simulator-objc.h"
typedef __typeof__(sizeof(int)) size_t;
extern "C" void *malloc(size_t);
extern "C" void *alloca(size_t);
extern "C" void free(void *);
void testMallocFreeNoWarn() {
int *p1 = (int *)malloc(sizeof(int));
free(++p1); // no warn
int *p2 = (int *)malloc(sizeof(int));
free(p2);
free(p2); // no warn
int *p3 = (int *)malloc(sizeof(int)); // no warn
int *p4 = (int *)malloc(sizeof(int));
free(p4);
int j = *p4; // no warn
int *p5 = (int *)alloca(sizeof(int));
free(p5); // no warn
}
void testDeleteMalloced() {
int *p1 = (int *)malloc(sizeof(int));
delete p1;
// mismatch-warning@-1{{Memory allocated by malloc() should be deallocated by free(), not 'delete'}}
int *p2 = (int *)__builtin_alloca(sizeof(int));
delete p2; // no warn
}
void testUseZeroAllocatedMalloced() {
int *p1 = (int *)malloc(0);
*p1 = 1; // no warn
}
//----- Test free standard new
void testFreeOpNew() {
void *p = operator new(0);
free(p);
// mismatch-warning@-1{{Memory allocated by operator new should be deallocated by 'delete', not free()}}
}
void testFreeNewExpr() {
int *p = new int;
free(p);
// mismatch-warning@-1{{Memory allocated by 'new' should be deallocated by 'delete', not free()}}
free(p);
}
void testObjcFreeNewed() {
int *p = new int;
NSData *nsdata = [NSData dataWithBytesNoCopy:p length:sizeof(int) freeWhenDone:1];
// mismatch-warning@-1{{+dataWithBytesNoCopy:length:freeWhenDone: cannot take ownership of memory allocated by 'new'}}
}
void testFreeAfterDelete() {
int *p = new int;
delete p;
free(p); // newdelete-warning{{Use of memory after it is freed}}
}
void testStandardPlacementNewAfterDelete() {
int *p = new int;
delete p;
p = new (p) int; // newdelete-warning{{Use of memory after it is freed}}
}
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