False positive on cpp 3927

[Matthieu_Bolt]

Make sure to read this post before raising a thread here:

How to Report a False-positive / False-negative

Hey SonarSource Community! False-positives happen, as do false-negatives, and we’re eager to fix them. We are thrilled when our users report problems, so we can make our products better. What is a false-positive (FP)? A false-positive is when an issue is raised unexpectedly on code that should not trigger an issue, or where the suggested action doesn’t make any sense for the code. What is a false-negative (FN)? A false-negative is when an issue should be raised on a piece of code, but isn’t…

Then tell us:

• What language is this for? c++20
• Which rule? cpp:$3972ng cpp:S3972 Move this “if” to a new line or add the missing “else”.
• Why do you believe it’s a false-positive/false-negative? There is no if else on the code
• Are you using SonarQube - LTS version 9.9
  • SonarLint - VS proferssional17.5.3/6.15.0.67199
    *connected mode with SonarQube

Clearly there is no if else statement on the indicated line.

I can’t reproduce it with a simple example that’s why I have attached a screenshot:

[Fred_Tingaud]

Thanks for raising this issue @Matthieu_Bolt.

I created a ticket to fix it.

[Fred_Tingaud]

Hi @Matthieu_Bolt ,

I would be interested in your complete case because I don’t understand how the generated code ends up resembling this.

Would you mind generating a reproducer file so that we can analyze it?
Either through SonarQube:

• Search in the analysis log for the full path of the source file for which you want to create a reproducer (the one in the screenshot). You will have to use exactly this name (same case, / or \…)
• Add the reproducer option to the scanner configuration:
  sonar.cfamily.reproducer="Full path to the .cpp"
• Re-run the scanner to generate a file named sonar-cfamily.reproducer in the project folder.
• Please share this file. If you think this file contains private information, let us know, and we’ll send you a private message that will allow you to send it privately.

Or through Visual Studio and SonarLint: Troubleshooting problems with C or Cpp analysis · SonarSource/sonarlint-visualstudio Wiki · GitHub

[mtnpke (Philipp)]

Hi, is this fixed in Enterprise Edition Version 9.9 (build 65466)? I couldn’t really tell from the ticket and I see this error as well.