STM32CubeIDE Indexer: False Positive Syntax Error with C11 _Generic

[zmiga]

Hello everyone,

I am facing an issue with the STM32CubeIDE V1.17.0 indexer, where it highlights a syntax error when using the C11 _Generic primitive. Due to company project policies, I cannot upgrade to a newer version of the IDE at this time, so I need to find a solution or workaround for V1.17.0.

The indexer flags the code as a "Syntax error" as shown in the attached image:

The PAR_SET macro is defined as follows:

Key details:

• There are no missing includes or path issues.

• The code compiles successfully without any errors or warnings (GCC is happy).

• Runtime performance is intact, and the macro functions exactly as expected.

The problem seems to be strictly with the indexer being unable to parse the C11 _Generic keyword correctly. Has anyone encountered this or found a way to "hint" the correct syntax to the indexer?

Any suggestions are greatly appreciated!

Best regards, Žiga

[CTapp.1]

Probably the same underlying issue as reported here and here - basically seems to be a known Eclipse issue related to C11 language features. 

[Andrew Neil · Accepted solution]

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@CTapp.1 wrote:

Probably the same underlying issue as reported here and here 

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Indeed!

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@CTapp.1 wrote:

basically seems to be a known Eclipse issue related to C11 language features. 

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although the 2nd one isn't to do with C11 - it's GCC-specific "attribute" stuff.

Another one here - with C23

@zmiga in conclusion, this is a known "feature" of the Eclipse syntax analyser.

And it's not unique to Eclipse - other IDEs (eg, MSVC) also have similar "features" with their syntax analysers.