Maybe is not a good practice, but some places in code there is try-catch-finally block where some value is set in catch and this value is then used in finally for error logging. Sonar is giving “Remove this useless assignment to local variable“ How to overcome this issue?

You’re gonna need to give us a lot more data :slight_smile: [image] How to Report a False-positive / False-negative Report False-positive / False-negative... Hey SonarSource Community! False-positives happen , as do false-negatives, and we’re eager to fix them…

Version “Enterprise Edition v2025.1 (102418) ACTIVE MQR Mode“ Language C#. Code something like this: string errorText = string.Empty; try { //DO STUFF } catch (Exception ex) { //DO SOME ERROR RELATED STUFF errorText = ex.Message; throw; } finally { //DO SOME CLOSING & CLEANING & LOG…

I can’t get that issue to raise. dotnettest.zip (1.3 KB) What am I doing differently?

Hmm… Maybe it is because I instantiate the log message in finally like this. I can’t think of anything else: string response = string.Empty; string errorMessage = string.Empty; try { response = SendMessage(queryData); } catch (Exception e) { errorMessage = e.Message; throw; } finally { …

Hello, we looked in to the issue and can confirm that this is a False Positive. The minimal code that raises the issue is public void UsedInFinally_AfterOtherAssignment() { int value = 42; try { SomethingThatCanThrow(); } catch (Exception ex) { value = 0; //…

C# try-catch-finally

Rules and Languages Report False-positive / False-negative...

Colin (Colin) September 8, 2025, 8:37am 2

You’re gonna need to give us a lot more data

What version of SonarQube are you using?
What language are you analyzing?
Can you give an example code snippet where an issue is raised you don’t expect it to be?

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C# try-catch-finally

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