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### 569. Postcondition for basic_ios::clear(iostate) incorrectly stated

Section: 31.5.4.4 [iostate.flags] Status: Dup Submitter: Seungbeom Kim Opened: 2006-03-10 Last modified: 2016-01-28

Priority: Not Prioritized

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Duplicate of: 272

Discussion:

Section: 27.4.4.3 [lib.iostate.flags]

Paragraph 4 says:

> >     void clear(iostate state = goodbit);

> Postcondition: If `rdbuf()!=0` then `state == rdstate();` otherwise `rdstate()==state|ios_base::badbit`.

The postcondition "rdstate()==state|ios_base::badbit" is parsed as "(rdstate()==state)|ios_base::badbit", which is probably what the committee meant.

Rationale: