squid:S3655 (Optional value should only be accessed after calling isPresent()) being fired even though control will never reach the optional.get() call

Rules and Languages Report False-positive / False-negative...
1

We’re using SonarQube server Version 6.7.5 (build 38563). With default settings & the sonar-way quality profile.

We have a lot of code like this:

Optional<SomeClass> optional = ...

if (optional.isEmpty()) {
     throw new Exception("Error");
}

var value = optional.get();

This triggers S3655 every time & we have to mark it as a false positive. From this topic I see that this PR was supposed to fix this issue. But from the examples in the PR I think that the case where control flow is interrupted due to the isEmpty() check is missed.

Is there any workaround for this? Or a planned fix?

Thanks.

2

Hi,

What is the sonarjava version used to reproduce this issue ?
This is likely to have been fixed by : https://jira.sonarsource.com/browse/SONARJAVA-3087 since version 5.12.1

3

Hi @Nicolas_Peru,

I found that this case is still happening in our Sonarqube even we updated the version higher to 5.12.1. So i have created a “help” ticket recently. Can you reproduce this problem too?

SonarQube & relevant plugin version:

  • SonarQube Developer edition, the version is 7.9.1.27448
  • SonarJava version is 5.14 (build 18788)
4

Since an other thread for a similar issue was created, I’m closing this one, please continue the discussion there if you still face issue.