f0c90dfcd8
Changed the warning message: - **From**: 'Attempt to free released memory' **To**: 'Attempt to release already released memory' - **From**: 'Attempt to free non-owned memory' **To**: 'Attempt to release non-owned memory' - **From**: 'Use of memory after it is freed' **To**: 'Use of memory after it is released' All connected tests and their expectations have been changed accordingly. Inspired by [this PR](https://github.com/llvm/llvm-project/pull/147542#discussion_r2195197922)
89 lines
2.4 KiB
Plaintext
89 lines
2.4 KiB
Plaintext
// RUN: %clang_analyze_cc1 -std=c++11 -fblocks %s \
|
|
// RUN: -verify=newdelete \
|
|
// RUN: -analyzer-checker=core \
|
|
// RUN: -analyzer-checker=cplusplus.NewDelete
|
|
|
|
// leak-no-diagnostics
|
|
|
|
// RUN: %clang_analyze_cc1 -std=c++11 -DLEAKS -fblocks %s \
|
|
// RUN: -verify=leak \
|
|
// RUN: -analyzer-checker=core \
|
|
// RUN: -analyzer-checker=cplusplus.NewDeleteLeaks
|
|
|
|
// 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 released}}
|
|
}
|
|
|
|
void testStandardPlacementNewAfterDelete() {
|
|
int *p = new int;
|
|
delete p;
|
|
p = new (p) int; // newdelete-warning{{Use of memory after it is released}}
|
|
}
|