FALSE POSITIVE: java:S2259 reports a null dereference in a compile-time false integer branch

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1

Hi, I found a false positive in SonarQube 26.7.0 with sonar-java 8.34 when an integer comparison is known to be false.

Affected tool

SonarQube 26.7.0.124771; sonar-java 8.34 (build 44906)

Affected checker

SonarQube java:S2259

Minimal reproducer

class S2259IntegerCondition {
  void test() {
    if (32 != 32) {
      Object object = null;
      object.toString();
    }
  }
}

Reproduction command

sonar-scanner --version
sonar-scanner -Dsonar.projectKey=s2259-reproducer -Dsonar.sources=sonarqube-s2259-fp-integer-condition.java -Dsonar.host.url="$SONAR_HOST_URL" -Dsonar.token="$SONAR_TOKEN"

Current behavior

SonarQube reports sonarqube-s2259-fp-integer-condition.java:5: java:S2259: A NullPointerException could be thrown; object is nullable here.

Expected behavior

S2259 should not report this dereference because 32 != 32 is false and the branch is unreachable.