[backport] gcc12's regex header file relies on a std::vector<int> instance, expo… #11573
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…rt it. The C++ modules marks the std::vector<int> instantiation as not visible because it came from the `regex` header file which we did not explicitly include. root-project/root@a785402 introduces checks if certain declaration is visible in dictionary generation time which was intending to semantically improve the coherence by what the user "allowed" (or requested) rootcling to see vs what it can see globally. While this model works well it seems to not work for template instantiations as they won't be re-instantiated with visible modifier. This patch works around the current issue seen with libstdc++ 12 but a better solution would be to implement a finer grained control over the implicit template instatiations when generating a dictionary. Fixes root-project#11329
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Starting build on |
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Build failed on windows10/cxx14. |
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Build failed on ROOT-ubuntu18.04/nortcxxmod. Errors:
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Axel-Naumann
approved these changes
Oct 15, 2022
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Failure is unrelated and fixed in the meantime |
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…rt it.
The C++ modules marks the std::vector instantiation as not visible because it came from the
regexheader file which we did not explicitly include.a785402 introduces checks if certain declaration is visible in dictionary generation time which was intending to semantically improve the coherence by what the user "allowed" (or requested) rootcling to see vs what it can see globally. While this model works well it seems to not work for template instantiations as they won't be re-instantiated with visible modifier.
This patch works around the current issue seen with libstdc++ 12 but a better solution would be to implement a finer grained control over the implicit template instatiations when generating a dictionary.
Fixes #11329