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Merged
merged 7 commits into from
Aug 27, 2025
Merged

C++: Add ComPtr MaD models #20301

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6f64129
C++: Add ComPtr tests.
MathiasVP Aug 27, 2025
246ed9d
C++: Add a model for ComPtr.
MathiasVP Aug 27, 2025
9e9f6dd
C++: Accept test changes.
MathiasVP Aug 27, 2025
96b6986
C++: Fix duplicated entries.
MathiasVP Aug 27, 2025
7c05622
C++: Add missing type and accept test changes.
MathiasVP Aug 27, 2025
8c07a3e
C++: Add testcase with missing model.
MathiasVP Aug 27, 2025
bebfe03
C++: Add missing model and accept test changes.
MathiasVP Aug 27, 2025
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20 changes: 20 additions & 0 deletions cpp/ql/lib/ext/ComPtr.model.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
extensions:
- addsTo:
pack: codeql/cpp-all
extensible: summaryModel
data: # namespace, type, subtypes, name, signature, ext, input, output, kind, provenance
- ["Microsoft::WRL", "ComPtr", True, "ComPtr<T>", "(T *)", "", "Argument[*@0]", "Argument[-1].Element[@]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "ComPtr", "(const ComPtr &)", "", "Argument[*0].Element[@]", "Argument[-1].Element[@]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "ComPtr", "(ComPtr &&)", "", "Argument[*0].Element[@]", "Argument[-1].Element[@]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "As", "", "", "Argument[-1]", "Argument[*0]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "AsIID", "", "", "Argument[-1]", "Argument[*1]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "AsWeak", "", "", "Argument[-1]", "Argument[*0]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "Attach", "", "", "Argument[*@0]", "Argument[-1].Element[@]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr<T>", True, "CopyTo", "(T **)", "", "Argument[-1].Element[@]", "Argument[**@0]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "CopyTo", "(REFIID,void **)", "", "Argument[-1].Element[@]", "Argument[**@1]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "Detach", "", "", "Argument[-1].Element[@]", "ReturnValue[*]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "Get", "", "", "Argument[-1].Element[@]", "ReturnValue[*]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "GetAddressOf", "", "", "Argument[-1].Element[@]", "ReturnValue[**]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "ReleaseAndGetAddressOf", "", "", "Argument[-1].Element[@]", "ReturnValue[**]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "Swap", "", "", "Argument[-1]", "Argument[*0]", "value", "manual"]
- ["Microsoft::WRL", "ComPtr", True, "Swap", "", "", "Argument[*0]", "Argument[-1]", "value", "manual"]
5 changes: 5 additions & 0 deletions cpp/ql/test/library-tests/dataflow/external-models/validatemodels.expected
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Expand Up @@ -503,6 +503,7 @@
| Dubious signature "(CURLU *,CURLUPart,const char *,unsigned int)" in summary model. |
| Dubious signature "(CURLU *,const char *)" in summary model. |
| Dubious signature "(CURLU *,const char *,char **,OperationConfig *)" in summary model. |
| Dubious signature "(ComPtr &&)" in summary model. |
| Dubious signature "(CompoundDictionary *,const PreparedDictionary *)" in summary model. |
| Dubious signature "(Curl_cfilter *)" in summary model. |
| Dubious signature "(Curl_cfilter **,Curl_easy *)" in summary model. |
Expand Down Expand Up @@ -2130,6 +2131,7 @@
| Dubious signature "(RAND_POOL *,unsigned char *)" in summary model. |
| Dubious signature "(RAND_POOL *,unsigned int)" in summary model. |
| Dubious signature "(RECORD_LAYER *,SSL_CONNECTION *)" in summary model. |
| Dubious signature "(REFIID,void **)" in summary model. |
| Dubious signature "(RIO_NOTIFIER *)" in summary model. |
| Dubious signature "(RIPEMD160_CTX *,const unsigned char *)" in summary model. |
| Dubious signature "(RIPEMD160_CTX *,const void *,size_t)" in summary model. |
Expand Down Expand Up @@ -2431,6 +2433,8 @@
| Dubious signature "(Strent *)" in summary model. |
| Dubious signature "(Strtab *,const char *,size_t)" in summary model. |
| Dubious signature "(Strtab *,size_t *)" in summary model. |
| Dubious signature "(T *)" in summary model. |
| Dubious signature "(T **)" in summary model. |
| Dubious signature "(TLS_FEATURE *)" in summary model. |
| Dubious signature "(TLS_RL_RECORD *,const unsigned char *)" in summary model. |
| Dubious signature "(TS_ACCURACY *)" in summary model. |
Expand Down Expand Up @@ -3155,6 +3159,7 @@
| Dubious signature "(const CT_POLICY_EVAL_CTX *)" in summary model. |
| Dubious signature "(const CURLU *)" in summary model. |
| Dubious signature "(const CURLU *,CURLUPart,char **,unsigned int)" in summary model. |
| Dubious signature "(const ComPtr &)" in summary model. |
| Dubious signature "(const Command *,const size_t,const BlockSplit *,const BlockSplit *,const BlockSplit *,const uint8_t *,size_t,size_t,uint8_t,uint8_t,const ContextType *,HistogramLiteral *,HistogramCommand *,HistogramDistance *)" in summary model. |
| Dubious signature "(const Curl_easy *,const connectdata *,int)" in summary model. |
| Dubious signature "(const DH *)" in summary model. |
Expand Down
130 changes: 130 additions & 0 deletions cpp/ql/test/library-tests/dataflow/taint-tests/atl.cpp
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Expand Up @@ -1241,4 +1241,134 @@ namespace ATL {
sink(static_cast<CStrBufT<char>::PCXSTR>(b)); // $ ir
sink(static_cast<CStrBufT<char>::PXSTR>(b)); // $ ir
}
}

namespace Microsoft {
namespace WRL {
template <typename T>
class ComPtr;

struct GUID;

typedef GUID IID;

typedef IID *REFIID;

class IUnknown;

class WeakRef;

template <typename T>
class ComPtr
{
public:
using InterfaceType = T;

ComPtr();
ComPtr(const ComPtr &);
ComPtr(ComPtr &&);

template <typename U>
ComPtr(U *);

~ComPtr();

template <typename U>
HRESULT As(ComPtr<U> *p) const;

HRESULT AsWeak(WeakRef *);

void Attach(InterfaceType *);

HRESULT CopyTo(InterfaceType **);

HRESULT CopyTo(REFIID, void **) const;

template <typename U>
HRESULT CopyTo(U **) const;

T *Detach();

T *Get() const;

T *const *GetAddressOf() const;
T **GetAddressOf();

T **ReleaseAndGetAddressOf();

unsigned long Reset();

void Swap(ComPtr &&r);

void Swap(ComPtr &r);
};

}
}

namespace std {
template<class T> T&& move(T& t) noexcept; // simplified signature
}

void test_constructor()
{
Microsoft::WRL::ComPtr<int> p0;
sink(*p0.Get()); // clean

int x = source<int>();
Microsoft::WRL::ComPtr<int> p1(new int(x));
sink(*p1.Get()); // $ ir MISSING: ast
sink(*p1.Detach()); // $ ir MISSING: ast

Microsoft::WRL::ComPtr<int> p2(p1);
sink(*p2.Get()); // $ ir MISSING: ast

Microsoft::WRL::ComPtr<int> p3(std::move(p1));
sink(*p3.Get()); // $ ir MISSING: ast
}

void test_As()
{
int x = source<int>();
Microsoft::WRL::ComPtr<int> p1(new int(x));
Microsoft::WRL::ComPtr<int> p2;
p1.As(&p2);
sink(*p2.Get()); // $ ir MISSING: ast
}

void test_CopyTo()
{
int x = source<int>();
Microsoft::WRL::ComPtr<int> p1(new int(x));
int *raw = nullptr;
p1.CopyTo(&raw);
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This is using the template version right? I seem to be missing a test for the non-template, 1 argument version?

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Oh, yes you're right! We were in fact missing a model for that one (see 8c07a3e). I've fixed this in bebfe03

sink(*raw); // $ ir MISSING: ast

Microsoft::WRL::ComPtr<int> p2;
p1.CopyTo(nullptr, (void**)&raw);
sink(*raw); // $ ir MISSING: ast
}

void test_Swap()
{
int x = source<int>();
Microsoft::WRL::ComPtr<int> p1(new int(x));
Microsoft::WRL::ComPtr<int> p2;
p1.Swap(p2);
sink(*p2.Get()); // $ ir MISSING: ast
sink(*p1.Get()); // $ SPURIOUS: ir
}

void test_GetAddressOf()
{
int x = source<int>();
Microsoft::WRL::ComPtr<int> p1(new int(x));
sink(**p1.GetAddressOf()); // $ ir MISSING: ast

const Microsoft::WRL::ComPtr<int> p2(new int(x));
sink(**p2.GetAddressOf()); // $ ir MISSING: ast

Microsoft::WRL::ComPtr<int> p3(new int(x));
int **pp = p3.ReleaseAndGetAddressOf();
sink(**pp); // $ ir MISSING: ast
}
114 changes: 114 additions & 0 deletions cpp/ql/test/library-tests/dataflow/taint-tests/localTaint.expected
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Expand Up @@ -1278,6 +1278,120 @@ WARNING: module 'TaintTracking' has been deprecated and may be removed in future
| atl.cpp:1240:22:1240:30 | call to CStrBufT | atl.cpp:1241:46:1241:46 | b | |
| atl.cpp:1240:22:1240:30 | call to CStrBufT | atl.cpp:1242:45:1242:45 | b | |
| atl.cpp:1241:46:1241:46 | ref arg b | atl.cpp:1242:45:1242:45 | b | |
| atl.cpp:1315:31:1315:32 | call to ComPtr | atl.cpp:1316:9:1316:10 | p0 | |
| atl.cpp:1315:31:1315:32 | call to ComPtr | atl.cpp:1328:1:1328:1 | p0 | |
| atl.cpp:1316:9:1316:10 | ref arg p0 | atl.cpp:1328:1:1328:1 | p0 | |
| atl.cpp:1316:12:1316:14 | call to Get | atl.cpp:1316:8:1316:16 | * ... | TAINT |
| atl.cpp:1318:11:1318:21 | call to source | atl.cpp:1319:42:1319:42 | x | |
| atl.cpp:1319:34:1319:43 | new | atl.cpp:1319:34:1319:44 | call to ComPtr | TAINT |
| atl.cpp:1319:34:1319:44 | call to ComPtr | atl.cpp:1320:9:1320:10 | p1 | |
| atl.cpp:1319:34:1319:44 | call to ComPtr | atl.cpp:1321:9:1321:10 | p1 | |
| atl.cpp:1319:34:1319:44 | call to ComPtr | atl.cpp:1323:34:1323:35 | p1 | |
| atl.cpp:1319:34:1319:44 | call to ComPtr | atl.cpp:1326:44:1326:45 | p1 | |
| atl.cpp:1319:34:1319:44 | call to ComPtr | atl.cpp:1328:1:1328:1 | p1 | |
| atl.cpp:1319:42:1319:42 | x | atl.cpp:1319:34:1319:43 | new | |
| atl.cpp:1320:9:1320:10 | ref arg p1 | atl.cpp:1321:9:1321:10 | p1 | |
| atl.cpp:1320:9:1320:10 | ref arg p1 | atl.cpp:1323:34:1323:35 | p1 | |
| atl.cpp:1320:9:1320:10 | ref arg p1 | atl.cpp:1326:44:1326:45 | p1 | |
| atl.cpp:1320:9:1320:10 | ref arg p1 | atl.cpp:1328:1:1328:1 | p1 | |
| atl.cpp:1320:12:1320:14 | call to Get | atl.cpp:1320:8:1320:16 | * ... | TAINT |
| atl.cpp:1321:9:1321:10 | ref arg p1 | atl.cpp:1323:34:1323:35 | p1 | |
| atl.cpp:1321:9:1321:10 | ref arg p1 | atl.cpp:1326:44:1326:45 | p1 | |
| atl.cpp:1321:9:1321:10 | ref arg p1 | atl.cpp:1328:1:1328:1 | p1 | |
| atl.cpp:1321:12:1321:17 | call to Detach | atl.cpp:1321:8:1321:19 | * ... | TAINT |
| atl.cpp:1323:34:1323:35 | p1 | atl.cpp:1323:34:1323:36 | call to ComPtr | |
| atl.cpp:1323:34:1323:36 | call to ComPtr | atl.cpp:1324:9:1324:10 | p2 | |
| atl.cpp:1323:34:1323:36 | call to ComPtr | atl.cpp:1328:1:1328:1 | p2 | |
| atl.cpp:1324:9:1324:10 | ref arg p2 | atl.cpp:1328:1:1328:1 | p2 | |
| atl.cpp:1324:12:1324:14 | call to Get | atl.cpp:1324:8:1324:16 | * ... | TAINT |
| atl.cpp:1326:34:1326:42 | call to move | atl.cpp:1326:34:1326:47 | call to ComPtr | TAINT |
| atl.cpp:1326:34:1326:42 | ref arg call to move | atl.cpp:1326:44:1326:45 | p1 [inner post update] | |
| atl.cpp:1326:34:1326:42 | ref arg call to move | atl.cpp:1328:1:1328:1 | p1 | |
| atl.cpp:1326:34:1326:47 | call to ComPtr | atl.cpp:1327:9:1327:10 | p3 | |
| atl.cpp:1326:34:1326:47 | call to ComPtr | atl.cpp:1328:1:1328:1 | p3 | |
| atl.cpp:1326:44:1326:45 | p1 | atl.cpp:1326:34:1326:42 | call to move | TAINT |
| atl.cpp:1326:44:1326:45 | p1 | atl.cpp:1326:34:1326:47 | call to ComPtr | |
| atl.cpp:1327:9:1327:10 | ref arg p3 | atl.cpp:1328:1:1328:1 | p3 | |
| atl.cpp:1327:12:1327:14 | call to Get | atl.cpp:1327:8:1327:16 | * ... | TAINT |
| atl.cpp:1332:11:1332:21 | call to source | atl.cpp:1333:42:1333:42 | x | |
| atl.cpp:1333:34:1333:43 | new | atl.cpp:1333:34:1333:44 | call to ComPtr | TAINT |
| atl.cpp:1333:34:1333:44 | call to ComPtr | atl.cpp:1335:3:1335:4 | p1 | |
| atl.cpp:1333:34:1333:44 | call to ComPtr | atl.cpp:1337:1:1337:1 | p1 | |
| atl.cpp:1333:42:1333:42 | x | atl.cpp:1333:34:1333:43 | new | |
| atl.cpp:1334:31:1334:32 | call to ComPtr | atl.cpp:1335:10:1335:11 | p2 | |
| atl.cpp:1334:31:1334:32 | call to ComPtr | atl.cpp:1336:9:1336:10 | p2 | |
| atl.cpp:1334:31:1334:32 | call to ComPtr | atl.cpp:1337:1:1337:1 | p2 | |
| atl.cpp:1335:9:1335:11 | ref arg & ... | atl.cpp:1335:10:1335:11 | p2 [inner post update] | |
| atl.cpp:1335:9:1335:11 | ref arg & ... | atl.cpp:1336:9:1336:10 | p2 | |
| atl.cpp:1335:9:1335:11 | ref arg & ... | atl.cpp:1337:1:1337:1 | p2 | |
| atl.cpp:1335:10:1335:11 | p2 | atl.cpp:1335:9:1335:11 | & ... | |
| atl.cpp:1336:9:1336:10 | ref arg p2 | atl.cpp:1337:1:1337:1 | p2 | |
| atl.cpp:1336:12:1336:14 | call to Get | atl.cpp:1336:8:1336:16 | * ... | TAINT |
| atl.cpp:1341:11:1341:21 | call to source | atl.cpp:1342:42:1342:42 | x | |
| atl.cpp:1342:34:1342:43 | new | atl.cpp:1342:34:1342:44 | call to ComPtr | TAINT |
| atl.cpp:1342:34:1342:44 | call to ComPtr | atl.cpp:1344:3:1344:4 | p1 | |
| atl.cpp:1342:34:1342:44 | call to ComPtr | atl.cpp:1348:3:1348:4 | p1 | |
| atl.cpp:1342:34:1342:44 | call to ComPtr | atl.cpp:1350:1:1350:1 | p1 | |
| atl.cpp:1342:42:1342:42 | x | atl.cpp:1342:34:1342:43 | new | |
| atl.cpp:1343:14:1343:20 | 0 | atl.cpp:1344:14:1344:16 | raw | |
| atl.cpp:1343:14:1343:20 | 0 | atl.cpp:1345:9:1345:11 | raw | |
| atl.cpp:1343:14:1343:20 | 0 | atl.cpp:1348:31:1348:33 | raw | |
| atl.cpp:1343:14:1343:20 | 0 | atl.cpp:1349:9:1349:11 | raw | |
| atl.cpp:1344:3:1344:4 | ref arg p1 | atl.cpp:1348:3:1348:4 | p1 | |
| atl.cpp:1344:3:1344:4 | ref arg p1 | atl.cpp:1350:1:1350:1 | p1 | |
| atl.cpp:1344:13:1344:16 | ref arg & ... | atl.cpp:1344:14:1344:16 | raw [inner post update] | |
| atl.cpp:1344:13:1344:16 | ref arg & ... | atl.cpp:1345:9:1345:11 | raw | |
| atl.cpp:1344:13:1344:16 | ref arg & ... | atl.cpp:1348:31:1348:33 | raw | |
| atl.cpp:1344:13:1344:16 | ref arg & ... | atl.cpp:1349:9:1349:11 | raw | |
| atl.cpp:1344:14:1344:16 | raw | atl.cpp:1344:13:1344:16 | & ... | |
| atl.cpp:1345:9:1345:11 | raw | atl.cpp:1345:8:1345:11 | * ... | TAINT |
| atl.cpp:1347:31:1347:32 | call to ComPtr | atl.cpp:1350:1:1350:1 | p2 | |
| atl.cpp:1348:30:1348:33 | ref arg & ... | atl.cpp:1348:31:1348:33 | raw [inner post update] | |
| atl.cpp:1348:30:1348:33 | ref arg & ... | atl.cpp:1349:9:1349:11 | raw | |
| atl.cpp:1348:31:1348:33 | raw | atl.cpp:1348:30:1348:33 | & ... | |
| atl.cpp:1349:9:1349:11 | raw | atl.cpp:1349:8:1349:11 | * ... | TAINT |
| atl.cpp:1354:11:1354:21 | call to source | atl.cpp:1355:42:1355:42 | x | |
| atl.cpp:1355:34:1355:43 | new | atl.cpp:1355:34:1355:44 | call to ComPtr | TAINT |
| atl.cpp:1355:34:1355:44 | call to ComPtr | atl.cpp:1357:3:1357:4 | p1 | |
| atl.cpp:1355:34:1355:44 | call to ComPtr | atl.cpp:1359:9:1359:10 | p1 | |
| atl.cpp:1355:34:1355:44 | call to ComPtr | atl.cpp:1360:1:1360:1 | p1 | |
| atl.cpp:1355:42:1355:42 | x | atl.cpp:1355:34:1355:43 | new | |
| atl.cpp:1356:31:1356:32 | call to ComPtr | atl.cpp:1357:11:1357:12 | p2 | |
| atl.cpp:1356:31:1356:32 | call to ComPtr | atl.cpp:1358:9:1358:10 | p2 | |
| atl.cpp:1356:31:1356:32 | call to ComPtr | atl.cpp:1360:1:1360:1 | p2 | |
| atl.cpp:1357:3:1357:4 | ref arg p1 | atl.cpp:1359:9:1359:10 | p1 | |
| atl.cpp:1357:3:1357:4 | ref arg p1 | atl.cpp:1360:1:1360:1 | p1 | |
| atl.cpp:1357:11:1357:12 | ref arg p2 | atl.cpp:1358:9:1358:10 | p2 | |
| atl.cpp:1357:11:1357:12 | ref arg p2 | atl.cpp:1360:1:1360:1 | p2 | |
| atl.cpp:1358:9:1358:10 | ref arg p2 | atl.cpp:1360:1:1360:1 | p2 | |
| atl.cpp:1358:12:1358:14 | call to Get | atl.cpp:1358:8:1358:16 | * ... | TAINT |
| atl.cpp:1359:9:1359:10 | ref arg p1 | atl.cpp:1360:1:1360:1 | p1 | |
| atl.cpp:1359:12:1359:14 | call to Get | atl.cpp:1359:8:1359:16 | * ... | TAINT |
| atl.cpp:1364:11:1364:21 | call to source | atl.cpp:1365:42:1365:42 | x | |
| atl.cpp:1364:11:1364:21 | call to source | atl.cpp:1368:48:1368:48 | x | |
| atl.cpp:1364:11:1364:21 | call to source | atl.cpp:1371:42:1371:42 | x | |
| atl.cpp:1365:34:1365:43 | new | atl.cpp:1365:34:1365:44 | call to ComPtr | TAINT |
| atl.cpp:1365:34:1365:44 | call to ComPtr | atl.cpp:1366:10:1366:11 | p1 | |
| atl.cpp:1365:34:1365:44 | call to ComPtr | atl.cpp:1374:1:1374:1 | p1 | |
| atl.cpp:1365:42:1365:42 | x | atl.cpp:1365:34:1365:43 | new | |
| atl.cpp:1366:9:1366:26 | * ... | atl.cpp:1366:8:1366:26 | * ... | TAINT |
| atl.cpp:1366:10:1366:11 | ref arg p1 | atl.cpp:1374:1:1374:1 | p1 | |
| atl.cpp:1366:13:1366:24 | call to GetAddressOf | atl.cpp:1366:9:1366:26 | * ... | TAINT |
| atl.cpp:1368:40:1368:49 | new | atl.cpp:1368:40:1368:50 | call to ComPtr | TAINT |
| atl.cpp:1368:40:1368:50 | call to ComPtr | atl.cpp:1369:10:1369:11 | p2 | |
| atl.cpp:1368:40:1368:50 | call to ComPtr | atl.cpp:1374:1:1374:1 | p2 | |
| atl.cpp:1368:48:1368:48 | x | atl.cpp:1368:40:1368:49 | new | |
| atl.cpp:1369:9:1369:26 | * ... | atl.cpp:1369:8:1369:26 | * ... | TAINT |
| atl.cpp:1369:10:1369:11 | ref arg p2 | atl.cpp:1374:1:1374:1 | p2 | |
| atl.cpp:1369:13:1369:24 | call to GetAddressOf | atl.cpp:1369:9:1369:26 | * ... | TAINT |
| atl.cpp:1371:34:1371:43 | new | atl.cpp:1371:34:1371:44 | call to ComPtr | TAINT |
| atl.cpp:1371:34:1371:44 | call to ComPtr | atl.cpp:1372:14:1372:15 | p3 | |
| atl.cpp:1371:34:1371:44 | call to ComPtr | atl.cpp:1374:1:1374:1 | p3 | |
| atl.cpp:1371:42:1371:42 | x | atl.cpp:1371:34:1371:43 | new | |
| atl.cpp:1372:14:1372:15 | ref arg p3 | atl.cpp:1374:1:1374:1 | p3 | |
| atl.cpp:1372:17:1372:38 | call to ReleaseAndGetAddressOf | atl.cpp:1373:10:1373:11 | pp | |
| atl.cpp:1373:9:1373:11 | * ... | atl.cpp:1373:8:1373:11 | * ... | TAINT |
| atl.cpp:1373:10:1373:11 | pp | atl.cpp:1373:9:1373:11 | * ... | TAINT |
| bsd.cpp:17:11:17:16 | call to source | bsd.cpp:20:18:20:18 | s | |
| bsd.cpp:18:12:18:15 | addr | bsd.cpp:20:22:20:25 | addr | |
| bsd.cpp:18:12:18:15 | addr | bsd.cpp:23:8:23:11 | addr | |
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