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Select	Paper	Title	Authors	Audience	Doc Date	Mailing Date
	P4044R0	Just `pre!`. Mandatory precondition for contracts.	Lucian Radu Teodorescu L. Teodorescu	EWG		2026-04
Intent Proposal Mailing Date 2026-04 Post-Croydon Author(s) Lucian Radu Teodorescu Target Audience EWG Tracking issue View on GitHub Abstract C++26 contracts support a wide range of uses, but they currently cannot reliably enforce UB-safety. Because preconditions may be evaluated with ignore semantics, a library that relies on contract preconditions to prevent undefined behavior cannot guarantee that those checks will execute.

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