<ranges>: Make views ADL-proof
#4389
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By qualifying `_Fake_copy_init`, `_Adl_verify_range`, and `_As_lvalue`.
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tests/std/tests/GH_000140_adl_proof_views/test.compile.pass.cpp
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StephanTLavavej
approved these changes
Feb 15, 2024
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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 all of these ADL bugs! 🛡️ 🛠️ 🐞 |
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Towards #140. Follows up #4334.
This PR adds a bunch of contrived ranges for test that show almost all occurrences of
_Fake_copy_init,_Adl_verify_range, and_As_lvaluein<ranges>need to be qualified.The only exception looks superfluous to me:
STL/stl/inc/ranges
Lines 3911 to 3912 in 7d5d8c3
IIUC
_Left._Outerand_Right._Outerareforward_iterators here, and thusdecltype(_Left._Outer == _Right._Outer)should already beboolean-testable, and_Left._Innerand_Right._Innerare_Defaultaboxes for whichoperator==always returnsbool.As a result,
_Left._Outer == _Right._Outer && _Left._Inner == _Right._Innershould always be aboolprvalue (otherwise, the program is already ill-formed, possibly no diagnostic required), and we should simply drop_Fake_copy_init<bool>()here.