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Eclipse Linux 21.09 gives errors not taking into account C++ dialect [message #1848116]

Sun, 21 November 2021 11:18

Eclipse User

I have Eclipse 21.09 installed in Ubuntu 21.10.
I have a project that has a setting
C/C++ Build / Settings / GCC C++ Compiler / Dialect ISO C++ 20 in drop down list
But in the editor

#include <concepts> // only supported in C++ 20

template<std::copyable T>

I get the error Type 'std::copyable' could not be resolved.
But the project builds OK.
Is there a setting for code analysis that I should set?

Re: Eclipse Linux 21.09 gives errors not taking into account C++ dialect [message #1848123 is a reply to message #1848116]

Sun, 21 November 2021 21:43

Eclipse User

IIRC, there was a bug report on this and the resolution was
essentially the parser doesn't support C++20 and interest
in fixing it is lacking.

Perhaps you'd like to volunteer.

Re: Eclipse Linux 21.09 gives errors not taking into account C++ dialect [message #1848781 is a reply to message #1848123]

Thu, 16 December 2021 09:59

Eclipse User

In addition to this, setting the dialect flag to C++20 completely breaks static analysis for custom classes.

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