C#: Consider the left argument as the qualifier of instance operator calls.

michaelnebel · michaelnebel · commit 5c1468bd2b23 · 2026-03-04T09:57:02.000+01:00
diff --git a/csharp/extractor/Semmle.Extraction.CSharp/Entities/Expressions/UserCompoundAssignmentInvocation.cs b/csharp/extractor/Semmle.Extraction.CSharp/Entities/Expressions/UserCompoundAssignmentInvocation.cs
@@ -23,8 +23,8 @@ protected UserCompoundAssignmentInvocation(ExpressionNodeInfo info)
 
         protected override void PopulateExpression(TextWriter trapFile)
         {
-            Create(Context, Syntax.Left, this, 0);
-            Create(Context, Syntax.Right, this, 1);
+            Create(Context, Syntax.Left, this, -1);
+            Create(Context, Syntax.Right, this, 0);
 
             var target = info.GetTargetSymbol(Context);
             if (target is null)

Original file line number	Diff line number	Diff line change
`@@ -23,8 +23,8 @@ protected UserCompoundAssignmentInvocation(ExpressionNodeInfo info)`
`23`	`23`
`24`	`24`	`protected override void PopulateExpression(TextWriter trapFile)`
`25`	`25`	`{`
`26`		`- Create(Context, Syntax.Left, this, 0);`
`27`		`- Create(Context, Syntax.Right, this, 1);`
	`26`	`+ Create(Context, Syntax.Left, this, -1);`
	`27`	`+ Create(Context, Syntax.Right, this, 0);`
`28`	`28`
`29`	`29`	`var target = info.GetTargetSymbol(Context);`
`30`	`30`	`if (target is null)`