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### 1491. `try_lock` does not guarantee forward progress

Section: 33.6.4 [thread.mutex.requirements] Status: Resolved Submitter: INCITS Opened: 2010-08-25 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

Addresses US-186

`try_lock` does not provide a guarantee of forward progress because it is allowed to spuriously fail.

[ Resolution proposed by ballot comment: ]

> The standard mutex types must not fail spuriously in `try_lock`. See n3141 page 205 - Appendix 1 - Additional Details

[ 2010-11-01 Daniel comments: ]

> Paper n3152 addresses this issue.

Proposed resolution:

Resolved by n3209.