зеркало из https://github.com/github/codeql.git
C#: Add some lambda flow tests for demo
This commit is contained in:
Tom Hvitved
Родитель
134707605b
Коммит
19119ea0d4
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using System;
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public class LambdaFlow
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{
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/// <summary>
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/// Flow into a normal method
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/// </summary>
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class Ex1
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{
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void M1(string s)
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{
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Sink(s); // $ hasValueFlow=1
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}
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public void M2()
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{
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var source = Source(1);
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M1(source);
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}
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}
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/// <summary>
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/// Flow into a lambda
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/// </summary>
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class Ex2
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{
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void M1(Action<string> lambda)
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{
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var source = Source(2);
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lambda(source);
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}
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void M2()
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{
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Action<string> lambda = x => Sink(x); // $ hasValueFlow=2
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M1(lambda);
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}
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}
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/// <summary>
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/// Flow out of a lambda
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/// </summary>
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class Ex3
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{
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Func<string> M1()
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{
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return () => Source(3);
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}
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void M2()
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{
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var lambda = M1();
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Sink(lambda()); // $ hasValueFlow=3
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}
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}
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/// <summary>
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/// Flow through a lambda
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/// </summary>
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class Ex4
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{
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string M1(Func<string, string> lambda, string input)
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{
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return lambda(input);
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}
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void M2()
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{
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Func<string, string> id = x => x;
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var source = Source(4);
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var output = M1(id, source);
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Sink(output); // $ hasValueFlow=4
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}
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}
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/// <summary>
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/// No flow into lambda (call context sensitivity)
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/// </summary>
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class Ex5
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{
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void M1(Action<string> lambda, string input)
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{
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lambda(input);
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}
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void M2(Action<string> lambda, string input)
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{
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M1(lambda, input);
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}
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void M3()
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{
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Action<string> lambda1 = arg => Sink(arg);
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Action<string> lambda2 = arg => { };
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var source = Source(5);
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var nonSource = "non-source";
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M1(lambda1, nonSource);
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M1(lambda2, source);
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M2(lambda1, nonSource);
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M2(lambda2, source);
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}
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}
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/// <summary>
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/// Flow into a returned lambda
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/// </summary>
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class Ex6
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{
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Action<string> M1()
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{
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return x => Sink(x); // $ hasValueFlow=6
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}
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void M2()
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{
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var source = Source(6);
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var lambda = M1();
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lambda(source);
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}
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}
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/// <summary>
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/// No flow through lambda
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/// </summary>
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class Ex7
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{
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void M1(Func<string, string> lambda)
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{
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var source = Source(7);
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lambda(source);
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}
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void M2(Func<string, string> lambda)
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{
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var nonSource = "non-source";
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var output = lambda(nonSource);
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Sink(output);
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}
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void M3()
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{
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Func<string, string> id = x => x;
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M1(id);
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M2(id);
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}
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}
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static string Source(int source) => source.ToString();
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static void Sink(string value) { }
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}
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@ -0,0 +1,120 @@
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models
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edges
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| LambdaFlow.cs:10:24:10:24 | s : String | LambdaFlow.cs:12:18:12:18 | access to parameter s | provenance | |
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| LambdaFlow.cs:17:17:17:22 | access to local variable source : String | LambdaFlow.cs:18:16:18:21 | access to local variable source : String | provenance | |
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| LambdaFlow.cs:17:26:17:34 | call to method Source : String | LambdaFlow.cs:17:17:17:22 | access to local variable source : String | provenance | |
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| LambdaFlow.cs:18:16:18:21 | access to local variable source : String | LambdaFlow.cs:10:24:10:24 | s : String | provenance | |
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| LambdaFlow.cs:33:32:33:37 | lambda [Return] : Action<String> [delegate argument at position 0] : String | LambdaFlow.cs:42:16:42:21 | [post] access to local variable lambda : Action<String> [delegate argument at position 0] : String | provenance | |
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| LambdaFlow.cs:35:17:35:22 | access to local variable source : String | LambdaFlow.cs:36:20:36:25 | access to local variable source : String | provenance | |
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| LambdaFlow.cs:35:26:35:34 | call to method Source : String | LambdaFlow.cs:35:17:35:22 | access to local variable source : String | provenance | |
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| LambdaFlow.cs:36:13:36:18 | [post] access to parameter lambda : Action<String> [delegate argument at position 0] : String | LambdaFlow.cs:33:32:33:37 | lambda [Return] : Action<String> [delegate argument at position 0] : String | provenance | |
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| LambdaFlow.cs:36:20:36:25 | access to local variable source : String | LambdaFlow.cs:36:13:36:18 | [post] access to parameter lambda : Action<String> [delegate argument at position 0] : String | provenance | |
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| LambdaFlow.cs:41:37:41:37 | x : String | LambdaFlow.cs:41:47:41:47 | access to parameter x | provenance | |
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| LambdaFlow.cs:42:16:42:21 | [post] access to local variable lambda : Action<String> [delegate argument at position 0] : String | LambdaFlow.cs:41:37:41:37 | x : String | provenance | |
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| LambdaFlow.cs:59:20:59:34 | (...) => ... : (...) => ... [delegate return] : String | LambdaFlow.cs:64:26:64:29 | call to method M1 : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:59:26:59:34 | call to method Source : String | LambdaFlow.cs:59:20:59:34 | (...) => ... : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:64:17:64:22 | access to local variable lambda : (...) => ... [delegate return] : String | LambdaFlow.cs:65:18:65:23 | access to local variable lambda : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:64:26:64:29 | call to method M1 : (...) => ... [delegate return] : String | LambdaFlow.cs:64:17:64:22 | access to local variable lambda : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:65:18:65:23 | access to local variable lambda : (...) => ... [delegate return] : String | LambdaFlow.cs:65:18:65:25 | delegate call | provenance | |
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| LambdaFlow.cs:80:40:80:45 | lambda : (...) => ... [delegate return] : String | LambdaFlow.cs:82:20:82:25 | access to parameter lambda : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:80:55:80:59 | input : String | LambdaFlow.cs:82:27:82:31 | access to parameter input : String | provenance | |
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| LambdaFlow.cs:82:20:82:25 | [post] access to parameter lambda : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:80:40:80:45 | lambda [Return] : Func<String,String> [delegate argument at position 0] : String | provenance | |
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| LambdaFlow.cs:82:20:82:25 | access to parameter lambda : (...) => ... [delegate return] : String | LambdaFlow.cs:82:20:82:32 | delegate call : String | provenance | |
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| LambdaFlow.cs:82:27:82:31 | access to parameter input : String | LambdaFlow.cs:82:20:82:25 | [post] access to parameter lambda : Func<String,String> [delegate argument at position 0] : String | provenance | |
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| LambdaFlow.cs:87:34:87:35 | access to local variable id : (...) => ... [delegate return] : String | LambdaFlow.cs:89:29:89:30 | access to local variable id : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:87:39:87:39 | x : String | LambdaFlow.cs:87:44:87:44 | access to parameter x : String | provenance | |
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| LambdaFlow.cs:87:39:87:44 | (...) => ... : (...) => ... [delegate return] : String | LambdaFlow.cs:87:34:87:35 | access to local variable id : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:88:17:88:22 | access to local variable source : String | LambdaFlow.cs:89:33:89:38 | access to local variable source : String | provenance | |
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| LambdaFlow.cs:88:26:88:34 | call to method Source : String | LambdaFlow.cs:88:17:88:22 | access to local variable source : String | provenance | |
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| LambdaFlow.cs:89:17:89:22 | access to local variable output : String | LambdaFlow.cs:90:18:90:23 | access to local variable output | provenance | |
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| LambdaFlow.cs:89:26:89:39 | call to method M1 : String | LambdaFlow.cs:89:17:89:22 | access to local variable output : String | provenance | |
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| LambdaFlow.cs:89:29:89:30 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:87:39:87:39 | x : String | provenance | |
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| LambdaFlow.cs:89:29:89:30 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:87:39:87:44 | (...) => ... : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:89:29:89:30 | access to local variable id : (...) => ... [delegate return] : String | LambdaFlow.cs:80:40:80:45 | lambda : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:89:29:89:30 | access to local variable id : (...) => ... [delegate return] : String | LambdaFlow.cs:89:26:89:39 | call to method M1 : String | provenance | |
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| LambdaFlow.cs:89:33:89:38 | access to local variable source : String | LambdaFlow.cs:80:55:80:59 | input : String | provenance | |
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| LambdaFlow.cs:89:33:89:38 | access to local variable source : String | LambdaFlow.cs:89:29:89:30 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | provenance | |
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| LambdaFlow.cs:166:38:166:43 | lambda [Return] : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:182:16:182:17 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | provenance | |
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| LambdaFlow.cs:168:17:168:22 | access to local variable source : String | LambdaFlow.cs:169:20:169:25 | access to local variable source : String | provenance | |
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| LambdaFlow.cs:168:26:168:34 | call to method Source : String | LambdaFlow.cs:168:17:168:22 | access to local variable source : String | provenance | |
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| LambdaFlow.cs:169:13:169:18 | [post] access to parameter lambda : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:166:38:166:43 | lambda [Return] : Func<String,String> [delegate argument at position 0] : String | provenance | |
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| LambdaFlow.cs:169:20:169:25 | access to local variable source : String | LambdaFlow.cs:169:13:169:18 | [post] access to parameter lambda : Func<String,String> [delegate argument at position 0] : String | provenance | |
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| LambdaFlow.cs:172:38:172:43 | lambda : (...) => ... [delegate return] : String | LambdaFlow.cs:175:26:175:31 | access to parameter lambda : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:175:17:175:22 | access to local variable output : String | LambdaFlow.cs:176:18:176:23 | access to local variable output | provenance | |
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| LambdaFlow.cs:175:26:175:31 | access to parameter lambda : (...) => ... [delegate return] : String | LambdaFlow.cs:175:26:175:42 | delegate call : String | provenance | |
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| LambdaFlow.cs:175:26:175:42 | delegate call : String | LambdaFlow.cs:175:17:175:22 | access to local variable output : String | provenance | |
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| LambdaFlow.cs:181:34:181:35 | access to local variable id : (...) => ... [delegate return] : String | LambdaFlow.cs:183:16:183:17 | access to local variable id : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:181:39:181:39 | x : String | LambdaFlow.cs:181:44:181:44 | access to parameter x : String | provenance | |
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| LambdaFlow.cs:181:39:181:44 | (...) => ... : (...) => ... [delegate return] : String | LambdaFlow.cs:181:34:181:35 | access to local variable id : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:182:16:182:17 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:181:39:181:39 | x : String | provenance | |
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| LambdaFlow.cs:182:16:182:17 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:181:39:181:44 | (...) => ... : (...) => ... [delegate return] : String | provenance | |
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| LambdaFlow.cs:183:16:183:17 | access to local variable id : (...) => ... [delegate return] : String | LambdaFlow.cs:172:38:172:43 | lambda : (...) => ... [delegate return] : String | provenance | |
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nodes
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| LambdaFlow.cs:10:24:10:24 | s : String | semmle.label | s : String |
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| LambdaFlow.cs:12:18:12:18 | access to parameter s | semmle.label | access to parameter s |
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| LambdaFlow.cs:17:17:17:22 | access to local variable source : String | semmle.label | access to local variable source : String |
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| LambdaFlow.cs:17:26:17:34 | call to method Source : String | semmle.label | call to method Source : String |
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| LambdaFlow.cs:18:16:18:21 | access to local variable source : String | semmle.label | access to local variable source : String |
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| LambdaFlow.cs:33:32:33:37 | lambda [Return] : Action<String> [delegate argument at position 0] : String | semmle.label | lambda [Return] : Action<String> [delegate argument at position 0] : String |
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| LambdaFlow.cs:35:17:35:22 | access to local variable source : String | semmle.label | access to local variable source : String |
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| LambdaFlow.cs:35:26:35:34 | call to method Source : String | semmle.label | call to method Source : String |
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| LambdaFlow.cs:36:13:36:18 | [post] access to parameter lambda : Action<String> [delegate argument at position 0] : String | semmle.label | [post] access to parameter lambda : Action<String> [delegate argument at position 0] : String |
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| LambdaFlow.cs:36:20:36:25 | access to local variable source : String | semmle.label | access to local variable source : String |
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| LambdaFlow.cs:41:37:41:37 | x : String | semmle.label | x : String |
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| LambdaFlow.cs:41:47:41:47 | access to parameter x | semmle.label | access to parameter x |
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| LambdaFlow.cs:42:16:42:21 | [post] access to local variable lambda : Action<String> [delegate argument at position 0] : String | semmle.label | [post] access to local variable lambda : Action<String> [delegate argument at position 0] : String |
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| LambdaFlow.cs:59:20:59:34 | (...) => ... : (...) => ... [delegate return] : String | semmle.label | (...) => ... : (...) => ... [delegate return] : String |
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| LambdaFlow.cs:59:26:59:34 | call to method Source : String | semmle.label | call to method Source : String |
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| LambdaFlow.cs:64:17:64:22 | access to local variable lambda : (...) => ... [delegate return] : String | semmle.label | access to local variable lambda : (...) => ... [delegate return] : String |
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| LambdaFlow.cs:64:26:64:29 | call to method M1 : (...) => ... [delegate return] : String | semmle.label | call to method M1 : (...) => ... [delegate return] : String |
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| LambdaFlow.cs:65:18:65:23 | access to local variable lambda : (...) => ... [delegate return] : String | semmle.label | access to local variable lambda : (...) => ... [delegate return] : String |
|
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| LambdaFlow.cs:65:18:65:25 | delegate call | semmle.label | delegate call |
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| LambdaFlow.cs:80:40:80:45 | lambda : (...) => ... [delegate return] : String | semmle.label | lambda : (...) => ... [delegate return] : String |
|
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| LambdaFlow.cs:80:40:80:45 | lambda [Return] : Func<String,String> [delegate argument at position 0] : String | semmle.label | lambda [Return] : Func<String,String> [delegate argument at position 0] : String |
|
||||
| LambdaFlow.cs:80:55:80:59 | input : String | semmle.label | input : String |
|
||||
| LambdaFlow.cs:82:20:82:25 | [post] access to parameter lambda : Func<String,String> [delegate argument at position 0] : String | semmle.label | [post] access to parameter lambda : Func<String,String> [delegate argument at position 0] : String |
|
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| LambdaFlow.cs:82:20:82:25 | access to parameter lambda : (...) => ... [delegate return] : String | semmle.label | access to parameter lambda : (...) => ... [delegate return] : String |
|
||||
| LambdaFlow.cs:82:20:82:32 | delegate call : String | semmle.label | delegate call : String |
|
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| LambdaFlow.cs:82:27:82:31 | access to parameter input : String | semmle.label | access to parameter input : String |
|
||||
| LambdaFlow.cs:87:34:87:35 | access to local variable id : (...) => ... [delegate return] : String | semmle.label | access to local variable id : (...) => ... [delegate return] : String |
|
||||
| LambdaFlow.cs:87:39:87:39 | x : String | semmle.label | x : String |
|
||||
| LambdaFlow.cs:87:39:87:44 | (...) => ... : (...) => ... [delegate return] : String | semmle.label | (...) => ... : (...) => ... [delegate return] : String |
|
||||
| LambdaFlow.cs:87:44:87:44 | access to parameter x : String | semmle.label | access to parameter x : String |
|
||||
| LambdaFlow.cs:88:17:88:22 | access to local variable source : String | semmle.label | access to local variable source : String |
|
||||
| LambdaFlow.cs:88:26:88:34 | call to method Source : String | semmle.label | call to method Source : String |
|
||||
| LambdaFlow.cs:89:17:89:22 | access to local variable output : String | semmle.label | access to local variable output : String |
|
||||
| LambdaFlow.cs:89:26:89:39 | call to method M1 : String | semmle.label | call to method M1 : String |
|
||||
| LambdaFlow.cs:89:29:89:30 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | semmle.label | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String |
|
||||
| LambdaFlow.cs:89:29:89:30 | access to local variable id : (...) => ... [delegate return] : String | semmle.label | access to local variable id : (...) => ... [delegate return] : String |
|
||||
| LambdaFlow.cs:89:33:89:38 | access to local variable source : String | semmle.label | access to local variable source : String |
|
||||
| LambdaFlow.cs:90:18:90:23 | access to local variable output | semmle.label | access to local variable output |
|
||||
| LambdaFlow.cs:166:38:166:43 | lambda [Return] : Func<String,String> [delegate argument at position 0] : String | semmle.label | lambda [Return] : Func<String,String> [delegate argument at position 0] : String |
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||||
| LambdaFlow.cs:168:17:168:22 | access to local variable source : String | semmle.label | access to local variable source : String |
|
||||
| LambdaFlow.cs:168:26:168:34 | call to method Source : String | semmle.label | call to method Source : String |
|
||||
| LambdaFlow.cs:169:13:169:18 | [post] access to parameter lambda : Func<String,String> [delegate argument at position 0] : String | semmle.label | [post] access to parameter lambda : Func<String,String> [delegate argument at position 0] : String |
|
||||
| LambdaFlow.cs:169:20:169:25 | access to local variable source : String | semmle.label | access to local variable source : String |
|
||||
| LambdaFlow.cs:172:38:172:43 | lambda : (...) => ... [delegate return] : String | semmle.label | lambda : (...) => ... [delegate return] : String |
|
||||
| LambdaFlow.cs:175:17:175:22 | access to local variable output : String | semmle.label | access to local variable output : String |
|
||||
| LambdaFlow.cs:175:26:175:31 | access to parameter lambda : (...) => ... [delegate return] : String | semmle.label | access to parameter lambda : (...) => ... [delegate return] : String |
|
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| LambdaFlow.cs:175:26:175:42 | delegate call : String | semmle.label | delegate call : String |
|
||||
| LambdaFlow.cs:176:18:176:23 | access to local variable output | semmle.label | access to local variable output |
|
||||
| LambdaFlow.cs:181:34:181:35 | access to local variable id : (...) => ... [delegate return] : String | semmle.label | access to local variable id : (...) => ... [delegate return] : String |
|
||||
| LambdaFlow.cs:181:39:181:39 | x : String | semmle.label | x : String |
|
||||
| LambdaFlow.cs:181:39:181:44 | (...) => ... : (...) => ... [delegate return] : String | semmle.label | (...) => ... : (...) => ... [delegate return] : String |
|
||||
| LambdaFlow.cs:181:44:181:44 | access to parameter x : String | semmle.label | access to parameter x : String |
|
||||
| LambdaFlow.cs:182:16:182:17 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | semmle.label | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String |
|
||||
| LambdaFlow.cs:183:16:183:17 | access to local variable id : (...) => ... [delegate return] : String | semmle.label | access to local variable id : (...) => ... [delegate return] : String |
|
||||
subpaths
|
||||
| LambdaFlow.cs:89:29:89:30 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:87:39:87:39 | x : String | LambdaFlow.cs:87:44:87:44 | access to parameter x : String | LambdaFlow.cs:87:39:87:44 | (...) => ... : (...) => ... [delegate return] : String |
|
||||
| LambdaFlow.cs:89:29:89:30 | access to local variable id : (...) => ... [delegate return] : String | LambdaFlow.cs:80:40:80:45 | lambda : (...) => ... [delegate return] : String | LambdaFlow.cs:82:20:82:32 | delegate call : String | LambdaFlow.cs:89:26:89:39 | call to method M1 : String |
|
||||
| LambdaFlow.cs:89:33:89:38 | access to local variable source : String | LambdaFlow.cs:80:55:80:59 | input : String | LambdaFlow.cs:80:40:80:45 | lambda [Return] : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:89:29:89:30 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String |
|
||||
| LambdaFlow.cs:182:16:182:17 | [post] access to local variable id : Func<String,String> [delegate argument at position 0] : String | LambdaFlow.cs:181:39:181:39 | x : String | LambdaFlow.cs:181:44:181:44 | access to parameter x : String | LambdaFlow.cs:181:39:181:44 | (...) => ... : (...) => ... [delegate return] : String |
|
||||
testFailures
|
||||
| LambdaFlow.cs:144:34:144:52 | // ... | Missing result: hasValueFlow=6 |
|
||||
| LambdaFlow.cs:176:18:176:23 | access to local variable output | Unexpected result: hasValueFlow=7 |
|
||||
#select
|
||||
| LambdaFlow.cs:12:18:12:18 | access to parameter s | LambdaFlow.cs:17:26:17:34 | call to method Source : String | LambdaFlow.cs:12:18:12:18 | access to parameter s | $@ | LambdaFlow.cs:17:26:17:34 | call to method Source : String | call to method Source : String |
|
||||
| LambdaFlow.cs:41:47:41:47 | access to parameter x | LambdaFlow.cs:35:26:35:34 | call to method Source : String | LambdaFlow.cs:41:47:41:47 | access to parameter x | $@ | LambdaFlow.cs:35:26:35:34 | call to method Source : String | call to method Source : String |
|
||||
| LambdaFlow.cs:65:18:65:25 | delegate call | LambdaFlow.cs:59:26:59:34 | call to method Source : String | LambdaFlow.cs:65:18:65:25 | delegate call | $@ | LambdaFlow.cs:59:26:59:34 | call to method Source : String | call to method Source : String |
|
||||
| LambdaFlow.cs:90:18:90:23 | access to local variable output | LambdaFlow.cs:88:26:88:34 | call to method Source : String | LambdaFlow.cs:90:18:90:23 | access to local variable output | $@ | LambdaFlow.cs:88:26:88:34 | call to method Source : String | call to method Source : String |
|
||||
| LambdaFlow.cs:176:18:176:23 | access to local variable output | LambdaFlow.cs:168:26:168:34 | call to method Source : String | LambdaFlow.cs:176:18:176:23 | access to local variable output | $@ | LambdaFlow.cs:168:26:168:34 | call to method Source : String | call to method Source : String |
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
/**
|
||||
* @kind path-problem
|
||||
*/
|
||||
|
||||
import csharp
|
||||
import TestUtilities.InlineFlowTest
|
||||
import ValueFlowTest<DefaultFlowConfig>
|
||||
import PathGraph
|
||||
|
||||
from PathNode source, PathNode sink
|
||||
where flowPath(source, sink)
|
||||
select sink, source, sink, "$@", source, source.toString()
|
||||
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