Scanner C++26 support?

Rules and Languages
1

During analysis of my C++ code I get:

java.lang.UnsupportedOperationException: Unsupported value of __cplusplus macro: 202400L
	at com.sonar.cpp.analyzer.StdFlags.fromCppMacrosWithoutConditionalFeatures(StdFlags.java:66)
	at com.sonar.cpp.analyzer.ClangDriver.onCapture(ClangDriver.java:666)
	at com.sonar.cpp.analyzer.CompilerDrivers.onCapture(CompilerDrivers.java:47)
...

We’re using latest Clang and just enabled C++26 to be able to use pack indexing (P2662R3).
While we could switch back temporarily and workaround by using much more verbose C++23 compatible code and leave a task in our bug tracker for the future, I would very much prefer not to.

Is there an easy way to ignore this error and ignore files where SonarQube actually encounters issues due to unsupported syntax?
In reality only a few files actually use C++26 features as of yet and it’d be fine enough to have those ignored. But language standard selection is project-wide without a decent bit of build system hacking so I’d prefer to avoid that too.

Using Developer Edition v2025.5 (113872).

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5

Hi @tambre ,

we currently don’t support C++26, I created a ticket for it: Jira. I don’t know when it is going to be available, hopefully in short time.

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