ADL-proof implementation of uninitialized memory algorithms #4374
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frederick-vs-ja
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tests/std/tests/P2538R1_adl_proof_std_projected/test.compile.pass.cpp
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tests/std/tests/GH_001596_adl_proof_algorithms/test.compile.pass.cpp
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StephanTLavavej
approved these changes
Feb 8, 2024
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Thanks! I pushed a few changes, and I think this is ready to go now. |
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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 fixing |
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Separated from #4004. Towards #140 and #1596.
There's a separated commit addressing cases noted in #4367 (comment). Note that EDG currently incorrectly thinks
Derived*andBase*are subtractable under some conditions, whichshould beis reported as DevCom-10581519 and should be cited as VSO-XXXX.Unfortunately, currently there doesn't seem possible to verify that
_Copy_memcpy_distanceand_Copy_memcpy_countcalls are properly qualified, because the comparison betweentagged_derived<holder<incomplete>>*andunreachable_sentinel_tis ill-formed due to ADL.As a workaround for DevCom-10456452, the
__builtin_laundercall is qualified.This PR changes one line
_Destroy_rangein the same way as #4373, which shouldn't raise merge conflict IIUC.