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Showing content from https://cplusplus.github.io/LWG/issue8 below:

Issue 8: Locale::global lacks guarantee

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Section: 28.3.3.1.6 [locale.statics] Status: TC1 Submitter: Matt Austern Opened: 1997-12-24 Last modified: 2016-08-09

Priority: Not Prioritized

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Discussion:

It appears there's an important guarantee missing from clause 22. We're told that invoking locale::global(L) sets the C locale if L has a name. However, we're not told whether or not invoking setlocale(s) sets the global C++ locale.

The intent, I think, is that it should not, but I can't find any such words anywhere.

Proposed resolution:

Add a sentence at the end of 28.3.3.1.6 [locale.statics], paragraph 2: 

No library function other than locale::global() shall affect the value returned by locale().

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