[jira] Commented: (STDCXX-767) [LVS _222612Y41] errors on std::money_get extracting space

["Martin Sebor (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/STDCXX-767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12598389#action_12598389 ] 

Martin Sebor commented on STDCXX-767:
-------------------------------------

This will be issue [836|http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-active.html#836] in the upcoming committee mailing.

> [LVS _222612Y41] errors on std::money_get extracting space
> ----------------------------------------------------------
>
>                 Key: STDCXX-767
>                 URL: https://issues.apache.org/jira/browse/STDCXX-767
>             Project: C++ Standard Library
>          Issue Type: Bug
>          Components: 22. Localization
>    Affects Versions: 4.1.2, 4.1.3, 4.1.4, 4.2.0
>            Reporter: Martin Sebor
>            Priority: Minor
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> The Plum Hall test lvs07a/conform/t228.dir/_222612Y41.cpp that exercises the {{std::money_get}} facet fails at runtime with the following errors:
> {noformat}
> $ ./_222612Y41
> ***** Reached first test *****
> ERROR in _222612Y41.cpp at line 85: "" != "-12345678901234"
> ERROR in _222612Y41.cpp at line 88: (49) != (121)
> #FAILED:  _222612Y41 (><)
> ***** 4 individual successful items in _222612Y41 *****
> ***** 0 successful test cases in _222612Y41 *****
> ***** 1 error detected in _222612Y41 *****
> ***** 0 skipped sections in _222612Y41 *****
> {noformat}
> The expects whitespace to be optional where the {{money_base::space}} specifier appears in the pattern format.
> According to [locale.money.get.virtuals] para. 2:
> {quote}
>   Where space or none appears in the format pattern, except at the end,
>   optional white space (as recognized by ct.is) is consumed after any
>   required space.
> {quote}
> We interpret this to mean that:
> * where money_base::space appears in the format at least one space is required, and
> * where money_base::none appears space is allowed but not required
> but other interpretations may be plausible. Clearly Plum Hall must read it differently. Seems like an issue in the standard. I've posted a question to [mailto:c++std-lib@accu.org] to get a clarification.

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