| 1 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDelete -std=c++11 -verify %s |
|---|
| 2 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDeleteLeaks -DLEAKS -std=c++11 -verify %s |
|---|
| 3 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDelete -std=c++11 -DTEST_INLINABLE_ALLOCATORS -verify %s |
|---|
| 4 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,cplusplus.NewDeleteLeaks -DLEAKS -std=c++11 -DTEST_INLINABLE_ALLOCATORS -verify %s |
|---|
| 5 | // RUN: %clang_analyze_cc1 -analyzer-inline-max-stack-depth 2 -analyzer-config ipa-always-inline-size=2 -analyzer-checker=core,cplusplus.NewDelete -std=c++11 -verify %s |
|---|
| 6 | // RUN: %clang_analyze_cc1 -analyzer-inline-max-stack-depth 2 -analyzer-config ipa-always-inline-size=2 -analyzer-checker=core,cplusplus.NewDeleteLeaks -DLEAKS -std=c++11 -verify %s |
|---|
| 7 | // RUN: %clang_analyze_cc1 -analyzer-inline-max-stack-depth 2 -analyzer-config ipa-always-inline-size=2 -analyzer-checker=core,cplusplus.NewDelete -std=c++11 -DTEST_INLINABLE_ALLOCATORS -verify %s |
|---|
| 8 | // RUN: %clang_analyze_cc1 -analyzer-inline-max-stack-depth 2 -analyzer-config ipa-always-inline-size=2 -analyzer-checker=core,cplusplus.NewDeleteLeaks -DLEAKS -std=c++11 -DTEST_INLINABLE_ALLOCATORS -verify %s |
|---|
| 9 | |
|---|
| 10 | // expected-no-diagnostics |
|---|
| 11 | |
|---|
| 12 | #include "Inputs/system-header-simulator-cxx.h" |
|---|
| 13 | |
|---|
| 14 | typedef enum memory_order { |
|---|
| 15 | memory_order_relaxed = __ATOMIC_RELAXED, |
|---|
| 16 | memory_order_consume = __ATOMIC_CONSUME, |
|---|
| 17 | memory_order_acquire = __ATOMIC_ACQUIRE, |
|---|
| 18 | memory_order_release = __ATOMIC_RELEASE, |
|---|
| 19 | memory_order_acq_rel = __ATOMIC_ACQ_REL, |
|---|
| 20 | memory_order_seq_cst = __ATOMIC_SEQ_CST |
|---|
| 21 | } memory_order; |
|---|
| 22 | |
|---|
| 23 | class Obj { |
|---|
| 24 | int RefCnt; |
|---|
| 25 | |
|---|
| 26 | public: |
|---|
| 27 | int incRef() { |
|---|
| 28 | return __c11_atomic_fetch_add((volatile _Atomic(int) *)&RefCnt, 1, |
|---|
| 29 | memory_order_relaxed); |
|---|
| 30 | } |
|---|
| 31 | |
|---|
| 32 | int decRef() { |
|---|
| 33 | return __c11_atomic_fetch_sub((volatile _Atomic(int) *)&RefCnt, 1, |
|---|
| 34 | memory_order_relaxed); |
|---|
| 35 | } |
|---|
| 36 | |
|---|
| 37 | void foo(); |
|---|
| 38 | }; |
|---|
| 39 | |
|---|
| 40 | class IntrusivePtr { |
|---|
| 41 | Obj *Ptr; |
|---|
| 42 | |
|---|
| 43 | public: |
|---|
| 44 | IntrusivePtr(Obj *Ptr) : Ptr(Ptr) { |
|---|
| 45 | Ptr->incRef(); |
|---|
| 46 | } |
|---|
| 47 | |
|---|
| 48 | IntrusivePtr(const IntrusivePtr &Other) : Ptr(Other.Ptr) { |
|---|
| 49 | Ptr->incRef(); |
|---|
| 50 | } |
|---|
| 51 | |
|---|
| 52 | ~IntrusivePtr() { |
|---|
| 53 | // We should not take the path on which the object is deleted. |
|---|
| 54 | if (Ptr->decRef() == 1) |
|---|
| 55 | delete Ptr; |
|---|
| 56 | } |
|---|
| 57 | |
|---|
| 58 | Obj *getPtr() const { return Ptr; } // no-warning |
|---|
| 59 | }; |
|---|
| 60 | |
|---|
| 61 | void testDestroyLocalRefPtr() { |
|---|
| 62 | IntrusivePtr p1(new Obj()); |
|---|
| 63 | { |
|---|
| 64 | IntrusivePtr p2(p1); |
|---|
| 65 | } |
|---|
| 66 | |
|---|
| 67 | // p1 still maintains ownership. The object is not deleted. |
|---|
| 68 | p1.getPtr()->foo(); // no-warning |
|---|
| 69 | } |
|---|
| 70 | |
|---|
| 71 | void testDestroySymbolicRefPtr(const IntrusivePtr &p1) { |
|---|
| 72 | { |
|---|
| 73 | IntrusivePtr p2(p1); |
|---|
| 74 | } |
|---|
| 75 | |
|---|
| 76 | // p1 still maintains ownership. The object is not deleted. |
|---|
| 77 | p1.getPtr()->foo(); // no-warning |
|---|
| 78 | } |
|---|
| 79 | |
|---|