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C#: Add data flow testcases for mutation operators.

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This commit is contained in:
Michael Nebel
2026-05-11 15:12:34 +02:00
parent 73c6d89bcd
commit dab1525d22
2 changed files with 57 additions and 0 deletions
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33
csharp/ql/test/library-tests/dataflow/operators/Operator.cs
View File

@@ -120,3 +120,36 @@ public class CompoundAssignmentOperators
Sink(x.Field); // $ hasValueFlow=1
}
}
public class MutatorOperators
{
static void Sink(object o) { }
static T Source<T>(object source) => throw null;
public class C1
{
public object Field { get; private set; }
public C1()
{
Field = new object();
}
public C1(object o)
{
Field = o;
}
public void operator ++()
{
Field = Source<object>(1);
}
public void M1()
{
var x = new C1();
x++;
Sink(x.Field); // $ hasValueFlow=1
}
}
}

24
csharp/ql/test/library-tests/dataflow/operators/operatorFlow.expected
View File

@@ -130,6 +130,16 @@ edges
| Operator.cs:119:14:119:14 | access to local variable y : C [property Field] : Object | Operator.cs:119:9:119:9 | [post] access to local variable x : C [property Field] : Object | provenance | |
| Operator.cs:120:14:120:14 | access to local variable x : C [property Field] : Object | Operator.cs:120:14:120:20 | access to property Field | provenance | |
| Operator.cs:120:14:120:14 | access to local variable x : C [property Field] : Object | Operator.cs:120:14:120:20 | access to property Field | provenance | |
| Operator.cs:143:30:143:31 | this [Return] : C1 [property Field] : Object | Operator.cs:151:13:151:13 | [post] access to local variable x : C1 [property Field] : Object | provenance | |
| Operator.cs:143:30:143:31 | this [Return] : C1 [property Field] : Object | Operator.cs:151:13:151:13 | [post] access to local variable x : C1 [property Field] : Object | provenance | |
| Operator.cs:145:13:145:17 | [post] this access : C1 [property Field] : Object | Operator.cs:143:30:143:31 | this [Return] : C1 [property Field] : Object | provenance | |
| Operator.cs:145:13:145:17 | [post] this access : C1 [property Field] : Object | Operator.cs:143:30:143:31 | this [Return] : C1 [property Field] : Object | provenance | |
| Operator.cs:145:21:145:37 | call to method Source<Object> : Object | Operator.cs:145:13:145:17 | [post] this access : C1 [property Field] : Object | provenance | |
| Operator.cs:145:21:145:37 | call to method Source<Object> : Object | Operator.cs:145:13:145:17 | [post] this access : C1 [property Field] : Object | provenance | |
| Operator.cs:151:13:151:13 | [post] access to local variable x : C1 [property Field] : Object | Operator.cs:152:18:152:18 | access to local variable x : C1 [property Field] : Object | provenance | |
| Operator.cs:151:13:151:13 | [post] access to local variable x : C1 [property Field] : Object | Operator.cs:152:18:152:18 | access to local variable x : C1 [property Field] : Object | provenance | |
| Operator.cs:152:18:152:18 | access to local variable x : C1 [property Field] : Object | Operator.cs:152:18:152:24 | access to property Field | provenance | |
| Operator.cs:152:18:152:18 | access to local variable x : C1 [property Field] : Object | Operator.cs:152:18:152:24 | access to property Field | provenance | |
nodes
| Operator.cs:9:39:9:39 | x : C | semmle.label | x : C |
| Operator.cs:9:39:9:39 | x : C | semmle.label | x : C |
@@ -275,6 +285,18 @@ nodes
| Operator.cs:120:14:120:14 | access to local variable x : C [property Field] : Object | semmle.label | access to local variable x : C [property Field] : Object |
| Operator.cs:120:14:120:20 | access to property Field | semmle.label | access to property Field |
| Operator.cs:120:14:120:20 | access to property Field | semmle.label | access to property Field |
| Operator.cs:143:30:143:31 | this [Return] : C1 [property Field] : Object | semmle.label | this [Return] : C1 [property Field] : Object |
| Operator.cs:143:30:143:31 | this [Return] : C1 [property Field] : Object | semmle.label | this [Return] : C1 [property Field] : Object |
| Operator.cs:145:13:145:17 | [post] this access : C1 [property Field] : Object | semmle.label | [post] this access : C1 [property Field] : Object |
| Operator.cs:145:13:145:17 | [post] this access : C1 [property Field] : Object | semmle.label | [post] this access : C1 [property Field] : Object |
| Operator.cs:145:21:145:37 | call to method Source<Object> : Object | semmle.label | call to method Source<Object> : Object |
| Operator.cs:145:21:145:37 | call to method Source<Object> : Object | semmle.label | call to method Source<Object> : Object |
| Operator.cs:151:13:151:13 | [post] access to local variable x : C1 [property Field] : Object | semmle.label | [post] access to local variable x : C1 [property Field] : Object |
| Operator.cs:151:13:151:13 | [post] access to local variable x : C1 [property Field] : Object | semmle.label | [post] access to local variable x : C1 [property Field] : Object |
| Operator.cs:152:18:152:18 | access to local variable x : C1 [property Field] : Object | semmle.label | access to local variable x : C1 [property Field] : Object |
| Operator.cs:152:18:152:18 | access to local variable x : C1 [property Field] : Object | semmle.label | access to local variable x : C1 [property Field] : Object |
| Operator.cs:152:18:152:24 | access to property Field | semmle.label | access to property Field |
| Operator.cs:152:18:152:24 | access to property Field | semmle.label | access to property Field |
subpaths
| Operator.cs:29:17:29:17 | access to local variable x : C | Operator.cs:16:38:16:38 | x : C | Operator.cs:16:49:16:49 | access to parameter x : C | Operator.cs:29:17:29:21 | call to operator + : C |
| Operator.cs:29:17:29:17 | access to local variable x : C | Operator.cs:16:38:16:38 | x : C | Operator.cs:16:49:16:49 | access to parameter x : C | Operator.cs:29:17:29:21 | call to operator + : C |
@@ -308,3 +330,5 @@ testFailures
| Operator.cs:78:14:78:14 | (...) ... | Operator.cs:84:17:84:29 | call to method Source<C> : C | Operator.cs:78:14:78:14 | (...) ... | $@ | Operator.cs:84:17:84:29 | call to method Source<C> : C | call to method Source<C> : C |
| Operator.cs:120:14:120:20 | access to property Field | Operator.cs:116:23:116:39 | call to method Source<Object> : Object | Operator.cs:120:14:120:20 | access to property Field | $@ | Operator.cs:116:23:116:39 | call to method Source<Object> : Object | call to method Source<Object> : Object |
| Operator.cs:120:14:120:20 | access to property Field | Operator.cs:116:23:116:39 | call to method Source<Object> : Object | Operator.cs:120:14:120:20 | access to property Field | $@ | Operator.cs:116:23:116:39 | call to method Source<Object> : Object | call to method Source<Object> : Object |
| Operator.cs:152:18:152:24 | access to property Field | Operator.cs:145:21:145:37 | call to method Source<Object> : Object | Operator.cs:152:18:152:24 | access to property Field | $@ | Operator.cs:145:21:145:37 | call to method Source<Object> : Object | call to method Source<Object> : Object |
| Operator.cs:152:18:152:24 | access to property Field | Operator.cs:145:21:145:37 | call to method Source<Object> : Object | Operator.cs:152:18:152:24 | access to property Field | $@ | Operator.cs:145:21:145:37 | call to method Source<Object> : Object | call to method Source<Object> : Object |