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[dcl.array] Grammar typo

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Assessment

Difficulty
1/5
Estimated time
Under an hour
Newbie friendliness
88/100
Issue type
Documentation
Clarity
Clearly specified
Activity status
Active
Tech stack
cpp
Domain
documentation

Research direction

Open the linked [dcl.array] clause and compare paragraphs 1 and 2. Confirm that the grammar for known-bound arrays distinguishes the required constant-expression from the unknown-bound case; done when the grammar matches the surrounding descriptions without overlap.

Written by the indexing model from the issue text.

Description

[dcl.array]/1 specifies declarations of an array of a known bound, while [dcl.array]/2 specifies declarations of an array of an unknow bound.

However, the array bound constant-expression is (incorrectly) optional in the first grammar, which includes the second case.

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