Implement LWG-3561 Issue with internal counter in discard_block_engine
#4066
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Also correct the types of static data members `block_size` and `used_block`.
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StephanTLavavej
approved these changes
Oct 3, 2023
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Thanks! After thinking about this carefully, I believe that this strategy is safe - it changes layout only for template arguments that were totally broken before. (Also this is highly unlikely to have occurred in practice.) And as I replied to the comment that @MattStephanson raised, the I believe that I understand these changes well enough that only one maintainer approval is needed. |
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
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Thanks for implementing this penultimate LWG issue! 🎉 😻 📉 |
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By changing the base type of
discard_block_enginewhen_Pxis too large fordiscard_blockto work. The changes will break ABI for somediscard_block_enginespecializations that didn't previously work.I haven't come up with a portable way for testing, because what I had tried took a long while to run.
Also correct the types of static data members
block_sizeandused_block.Fixes #2250.