llvm / llvm/llvm-project

LWG4130: Preconditions for `std::launder` might be overly strict

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c++26 libc++ lwg-issue
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LLVM
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Description

**Link:** https://wg21.link/LWG4130

Contributor guide

Open the contributing guide

Research direction

Start by reading the linked LWG4130 issue to understand which std::launder preconditions are considered too strict. Then locate the affected standard-library implementation and tests, if identified by that discussion; done means the intended wording or behavior is clearly reflected and covered by the relevant tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
compilers
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
25/100

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