C++: Add testcases with missing models.

Author: MathiasVP

cpp/ql/test/library-tests/dataflow/taint-tests/localTaint.expected

@@ -7735,6 +7735,12 @@ WARNING: module 'TaintTracking' has been deprecated and may be removed in future
 | taint.cpp:790:10:790:12 | ref arg & ... | taint.cpp:790:11:790:12 | f2 [inner post update] |  |
 | taint.cpp:790:10:790:12 | ref arg & ... | taint.cpp:791:7:791:8 | f2 |  |
 | taint.cpp:790:11:790:12 | f2 | taint.cpp:790:10:790:12 | & ... |  |
+| taint.cpp:805:12:805:25 | call to SysAllocString | taint.cpp:806:8:806:9 | p1 |  |
+| taint.cpp:806:8:806:9 | p1 | taint.cpp:806:7:806:9 | * ... | TAINT |
+| taint.cpp:808:12:808:32 | call to SysAllocStringByteLen | taint.cpp:809:8:809:9 | p2 |  |
+| taint.cpp:809:8:809:9 | p2 | taint.cpp:809:7:809:9 | * ... | TAINT |
+| taint.cpp:811:12:811:28 | call to SysAllocStringLen | taint.cpp:812:8:812:9 | p3 |  |
+| taint.cpp:812:8:812:9 | p3 | taint.cpp:812:7:812:9 | * ... | TAINT |
 | vector.cpp:16:43:16:49 | source1 | vector.cpp:17:26:17:32 | source1 |  |
 | vector.cpp:16:43:16:49 | source1 | vector.cpp:31:38:31:44 | source1 |  |
 | vector.cpp:17:21:17:33 | call to vector | vector.cpp:19:14:19:14 | v |  |

cpp/ql/test/library-tests/dataflow/taint-tests/taint.cpp

@@ -789,4 +789,25 @@ void fopen_test(char* source) {
 	FILE* f2;
 	fopen_s(&f2, source, "r");
 	sink(f2); // $ ast,ir
+}
+
+typedef wchar_t OLECHAR;
+typedef OLECHAR* LPOLESTR;
+typedef const LPOLESTR LPCOLESTR;
+typedef OLECHAR* BSTR;
+typedef const char* LPCSTR;
+
+BSTR SysAllocString(const OLECHAR *);
+BSTR SysAllocStringByteLen(LPCSTR, unsigned );
+BSTR SysAllocStringLen(const OLECHAR *,unsigned);
+
+void test_sysalloc() {
+	auto p1 = SysAllocString((LPOLESTR)indirect_source());
+	sink(*p1); // $ MISSING: ir,ast
+
+	auto p2 = SysAllocStringByteLen(indirect_source(), 10);
+	sink(*p2); // $ MISSING: ir,ast
+
+	auto p3 = SysAllocStringLen((LPOLESTR)indirect_source(), 10);
+	sink(*p3); // $ MISSING: ir,ast
 }

cpp/ql/test/library-tests/dataflow/taint-tests/test_mad-signatures.expected

@@ -2021,6 +2021,14 @@ getParameterTypeName
 | taint.cpp:783:5:783:11 | fopen_s | 1 | const char * |
 | taint.cpp:783:5:783:11 | fopen_s | 2 | const char * |
 | taint.cpp:785:6:785:15 | fopen_test | 0 | char * |
+| taint.cpp:800:6:800:19 | SysAllocString | 0 | const OLECHAR * |
+| taint.cpp:800:6:800:19 | SysAllocString | 0 | const wchar_t * |
+| taint.cpp:801:6:801:26 | SysAllocStringByteLen | 0 | LPCSTR |
+| taint.cpp:801:6:801:26 | SysAllocStringByteLen | 0 | const char * |
+| taint.cpp:801:6:801:26 | SysAllocStringByteLen | 1 | unsigned int |
+| taint.cpp:802:6:802:22 | SysAllocStringLen | 0 | const OLECHAR * |
+| taint.cpp:802:6:802:22 | SysAllocStringLen | 0 | const wchar_t * |
+| taint.cpp:802:6:802:22 | SysAllocStringLen | 1 | unsigned int |
 | vector.cpp:13:6:13:9 | sink | 0 | int |
 | vector.cpp:14:27:14:30 | sink | 0 | vector> & |
 | vector.cpp:14:27:14:30 | sink | 0 | vector> & |