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C#: Add test for assignment through delegate ref argument
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‎csharp/ql/test/library-tests/assignables/AssignableAccess.expected‎

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@@ -89,6 +89,10 @@
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| Assignables.cs:110:36:110:36 | access to local variable s | Assignables.cs:109:16:109:16 | s | write |
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| Assignables.cs:116:13:116:13 | access to local variable s | Assignables.cs:116:13:116:13 | s | write |
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| Assignables.cs:117:9:117:9 | access to local variable s | Assignables.cs:116:13:116:13 | s | write |
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| Assignables.cs:123:13:123:13 | access to local variable x | Assignables.cs:123:13:123:13 | x | write |
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| Assignables.cs:124:9:124:9 | access to parameter d | Assignables.cs:121:31:121:31 | d | read |
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| Assignables.cs:124:15:124:15 | access to local variable x | Assignables.cs:123:13:123:13 | x | read |
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| Assignables.cs:124:29:124:29 | String s | Assignables.cs:124:29:124:29 | s | write |
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| Discards.cs:7:9:7:9 | access to parameter x | Discards.cs:5:30:5:30 | x | write |
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| Discards.cs:20:32:20:32 | Boolean z | Discards.cs:20:32:20:32 | z | write |
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| Discards.cs:25:27:25:30 | access to parameter args | Discards.cs:23:27:23:30 | args | read |

‎csharp/ql/test/library-tests/assignables/AssignableDefinition.expected‎

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@@ -78,6 +78,10 @@
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| Assignables.cs:115:13:115:13 | i | Assignables.cs:115:13:115:13 | Int32 i | Assignables.cs:115:13:115:13 | <none> | Assignables.cs:115:13:115:13 | <none> | certain |
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| Assignables.cs:116:13:116:13 | s | Assignables.cs:116:13:116:25 | String s = ... | Assignables.cs:116:13:116:13 | access to local variable s | Assignables.cs:116:17:116:25 | nameof(...) | certain |
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| Assignables.cs:116:13:116:13 | s | Assignables.cs:117:9:117:30 | ... = ... | Assignables.cs:117:9:117:9 | access to local variable s | Assignables.cs:117:13:117:30 | nameof(...) | certain |
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| Assignables.cs:121:31:121:31 | d | Assignables.cs:121:31:121:31 | d | Assignables.cs:121:31:121:31 | <none> | Assignables.cs:121:31:121:31 | <none> | certain |
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| Assignables.cs:123:13:123:13 | x | Assignables.cs:123:13:123:17 | Int32 x = ... | Assignables.cs:123:13:123:13 | access to local variable x | Assignables.cs:123:17:123:17 | 0 | certain |
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| Assignables.cs:124:29:124:29 | s | Assignables.cs:124:29:124:29 | String s | Assignables.cs:124:29:124:29 | <none> | Assignables.cs:124:29:124:29 | <none> | certain |
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| Assignables.cs:124:29:124:29 | s | Assignables.cs:124:29:124:29 | String s | Assignables.cs:124:29:124:29 | String s | Assignables.cs:124:29:124:29 | <none> | certain |
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| Discards.cs:5:30:5:30 | x | Discards.cs:5:30:5:30 | x | Discards.cs:5:30:5:30 | <none> | Discards.cs:5:30:5:30 | <none> | certain |
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| Discards.cs:5:30:5:30 | x | Discards.cs:7:9:7:17 | ... = ... | Discards.cs:7:9:7:9 | access to parameter x | Discards.cs:7:13:7:17 | false | certain |
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| Discards.cs:19:14:19:14 | x | Discards.cs:19:9:19:29 | ... = ... | Discards.cs:19:9:19:29 | <none> | Discards.cs:19:9:19:29 | <none> | certain |

‎csharp/ql/test/library-tests/assignables/AssignableDefinitionNode.expected‎

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@@ -77,6 +77,10 @@
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| Assignables.cs:115:13:115:13 | Int32 i | Assignables.cs:115:13:115:13 | Int32 i |
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| Assignables.cs:116:13:116:25 | String s = ... | Assignables.cs:116:13:116:25 | String s = ... |
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| Assignables.cs:117:9:117:30 | ... = ... | Assignables.cs:117:9:117:30 | ... = ... |
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| Assignables.cs:121:31:121:31 | d | Assignables.cs:121:10:121:20 | enter DelegateRef |
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| Assignables.cs:123:13:123:17 | Int32 x = ... | Assignables.cs:123:13:123:17 | Int32 x = ... |
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| Assignables.cs:124:29:124:29 | String s | Assignables.cs:124:9:124:30 | delegate call |
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| Assignables.cs:124:29:124:29 | String s | Assignables.cs:124:29:124:29 | String s |
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| Discards.cs:5:30:5:30 | x | Discards.cs:5:19:5:19 | enter f |
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| Discards.cs:7:9:7:17 | ... = ... | Discards.cs:7:9:7:17 | ... = ... |
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| Discards.cs:13:9:13:20 | ... = ... | Discards.cs:13:9:13:20 | ... = ... |

‎csharp/ql/test/library-tests/assignables/Assignables.cs‎

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@@ -116,4 +116,11 @@ void Nameof()
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var s = nameof(i); // not a read of `i`
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s = nameof(this.Field); // not a read of `this.Field`
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}
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delegate void Delegate(ref int i, out string s);
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void DelegateRef(Delegate d)
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{
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var x = 0;
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d(ref x, out string s);
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}
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}

‎csharp/ql/test/library-tests/assignables/Assignables.expected‎

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| Assignables.cs:109:16:109:16 | s |
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| Assignables.cs:115:13:115:13 | i |
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| Assignables.cs:116:13:116:13 | s |
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| Assignables.cs:120:36:120:36 | i |
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| Assignables.cs:120:36:120:36 | i |
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| Assignables.cs:120:36:120:36 | i |
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| Assignables.cs:120:36:120:36 | i |
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| Assignables.cs:120:50:120:50 | s |
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| Assignables.cs:120:50:120:50 | s |
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| Assignables.cs:120:50:120:50 | s |
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| Assignables.cs:120:50:120:50 | s |
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| Assignables.cs:121:31:121:31 | d |
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| Assignables.cs:123:13:123:13 | x |
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| Assignables.cs:124:29:124:29 | s |
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| Discards.cs:5:6:5:8 | Item1 |
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| Discards.cs:5:11:5:16 | Item2 |
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| Discards.cs:5:30:5:30 | x |

‎csharp/ql/test/library-tests/assignables/GetAnAssignedValue.expected‎

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| Assignables.cs:109:16:109:16 | s | Assignables.cs:109:20:109:21 | "" |
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| Assignables.cs:116:13:116:13 | s | Assignables.cs:116:17:116:25 | nameof(...) |
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| Assignables.cs:116:13:116:13 | s | Assignables.cs:117:13:117:30 | nameof(...) |
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| Assignables.cs:123:13:123:13 | x | Assignables.cs:123:17:123:17 | 0 |
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| Discards.cs:5:30:5:30 | x | Discards.cs:7:13:7:17 | false |
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| Finally.cs:7:13:7:13 | i | Finally.cs:7:17:7:17 | 0 |
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| Finally.cs:7:13:7:13 | i | Finally.cs:15:17:15:17 | 1 |

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