`<flat_map>`: Make `_Pairing_iterator_provider::_Iterator` debugging and unwrapping more consistent with the rest of standard library - #6035

Merged

Stephan T. Lavavej (StephanTLavavej) merged 13 commits into

microsoft:feature/flat_mapfrom

vmichal:flat-map-unwrap

Jan 22, 2026

Commits on Jan 21, 2026

Make flat_map::iterator unwrapping and _Verify_range behave consistently with other iterator types.
Vojtěch Michal (vmichal)
committed
f7f07ad
Perform stricter checks in pairing iterator member functions when _ITERATOR_DEBUG_LEVEL != 0
Vojtěch Michal (vmichal)
committed
2a04b21
Make pairing iterator constructor private (only constructible by _Flat_map_base and other friends).
Vojtěch Michal (vmichal)
committed
035f0ad
Add death tests for detection of pairing iterators with broken invariants.
Vojtěch Michal (vmichal)
committed
c4d9823
Group friendships with ctor.
Stephan T. Lavavej (StephanTLavavej)
committed
2fe6b46
Consolidate access control.
Stephan T. Lavavej (StephanTLavavej)
committed
351ab46
Use `_Unwrapped_iterator` in `_Seek_to()`.
Stephan T. Lavavej (StephanTLavavej)
committed
c6ca84a

Commits on Jan 22, 2026