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[clang-tidy] cppcoreguidelines-avoid-init-default-constructors: a new check
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Authored by DNS320 on Jun 11 2021, 5:02 AM.



This check tries to implement C.45 of the C++ Core Guidelines.
During the implementation of the current state of this check, it was found that multiple functionalities, which the check also could use, already exists in other clang-tidy checks. These are:

  • Lookup if the body of a constructor (only) initialize class members (cppcoreguidelines-prefer-member-initializer)
  • Set a constructor =default if possible (hicpp-use-equals-default)
  • If possible, move/change constructor list initializers to class member initializers (modernize-use-default-member-init)

I would like to ask how I could proceed, as reimplementing already existing functionality of other checks might not be preferred, because of reasons like duplication and maintainability. But I think it would be beneficial if a check exists that combines the mentioned functionalities under the cppcoreguidelines module.

Generally, do you see a need for this check at all or is the activation of the three checks mentioned above the way to go to implicitly enforce C.45?

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Event Timeline

DNS320 created this revision.Jun 11 2021, 5:02 AM
DNS320 requested review of this revision.Jun 11 2021, 5:02 AM
Eugene.Zelenko added inline comments.

Shouldn't this check be enabled in C++11 or newer?


Please synchronize this statement with Release Notes.

What about bit filed members - their initialization is supported only in C++20.