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Potential fix for code scanning alert no. 12: Local scope variable shadows member #344

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merged 1 commit into from
Mar 11, 2025

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Potential fix for https://github.com/krishnprakash/codeql/security/code-scanning/12

To fix the problem, we need to rename the local variable loc in the Emit method to avoid shadowing the member variable loc. This will make the code clearer and prevent any potential confusion or bugs related to variable shadowing.

  • In general terms, we should rename the local variable to a name that does not conflict with any member variables.
  • Specifically, we will rename the local variable loc in the Emit method to location.
  • This change will be made in the file csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs on line 121 and any other lines within the Emit method that reference the local variable loc.

Suggested fixes powered by Copilot Autofix. Review carefully before merging.

…adows member

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
Signed-off-by: Phileco <[email protected]>
@github-actions github-actions bot added the C# label Mar 11, 2025
@@ -118,10 +118,10 @@
}
}

private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location loc, IEntity parent, Type type)
private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parent, Type type)

Check notice

Code scanning / CodeQL

Local scope variable shadows member Note

Local scope variable 'parent' shadows
TypeMention.parent
.

Copilot Autofix AI 11 days ago

To fix the problem, we need to rename the local variable parent in the Emit method to avoid shadowing the member variable parent. This will make the code clearer and reduce the risk of confusion or bugs. The best way to do this is to choose a new name for the local variable that accurately describes its purpose without conflicting with the member variable name.

In this case, we can rename the local variable parent to parentEntity in the Emit method. This change will be made in the file csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs on line 121 and any other lines within the Emit method that reference this variable.

Suggested changeset 1
csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs

Autofix patch

Autofix patch
Run the following command in your local git repository to apply this patch
cat << 'EOF' | git apply
diff --git a/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs b/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs
--- a/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs
+++ b/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs
@@ -120,5 +120,5 @@
 
-        private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parent, Type type)
+        private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parentEntity, Type type)
         {
-            trapFile.type_mention(this, type.TypeRef, parent);
+            trapFile.type_mention(this, type.TypeRef, parentEntity);
             trapFile.type_mention_location(this, Context.CreateLocation(location));
EOF
@@ -120,5 +120,5 @@

private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parent, Type type)
private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parentEntity, Type type)
{
trapFile.type_mention(this, type.TypeRef, parent);
trapFile.type_mention(this, type.TypeRef, parentEntity);
trapFile.type_mention_location(this, Context.CreateLocation(location));
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@@ -118,10 +118,10 @@
}
}

private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location loc, IEntity parent, Type type)
private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parent, Type type)

Check notice

Code scanning / CodeQL

Local scope variable shadows member Note

Local scope variable 'type' shadows
TypeMention.type
.

Copilot Autofix AI 11 days ago

To fix the problem, we need to rename the local variable type in the Emit method to avoid shadowing the member variable type. This will make the code clearer and reduce the risk of errors. The best way to fix this is to choose a new name for the local variable that accurately describes its purpose and does not conflict with any existing member variables.

In this case, we can rename the local variable type to localType in the Emit method. This change will be made in the file csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs on lines 121 and 123.

Suggested changeset 1
csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs

Autofix patch

Autofix patch
Run the following command in your local git repository to apply this patch
cat << 'EOF' | git apply
diff --git a/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs b/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs
--- a/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs
+++ b/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs
@@ -120,5 +120,5 @@
 
-        private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parent, Type type)
+        private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parent, Type localType)
         {
-            trapFile.type_mention(this, type.TypeRef, parent);
+            trapFile.type_mention(this, localType.TypeRef, parent);
             trapFile.type_mention_location(this, Context.CreateLocation(location));
EOF
@@ -120,5 +120,5 @@

private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parent, Type type)
private void Emit(TextWriter trapFile, Microsoft.CodeAnalysis.Location location, IEntity parent, Type localType)
{
trapFile.type_mention(this, type.TypeRef, parent);
trapFile.type_mention(this, localType.TypeRef, parent);
trapFile.type_mention_location(this, Context.CreateLocation(location));
Copilot is powered by AI and may make mistakes. Always verify output.
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@krishnprakash krishnprakash marked this pull request as ready for review March 11, 2025 09:35
@krishnprakash krishnprakash merged commit 658011c into main Mar 11, 2025
6 of 7 checks passed
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