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