[Bug libc/11635] New: setlocale() doesn't support path based locale specification

["yann at droneaud dot fr" <sourceware-bugzilla at sourceware dot org>]

I've created a locale definition with localedef -f UTF-8 -i fr_FR
$PWD/fr_FR.UTF-8 which create a private definition.

According to The Open Group Base Specifications Issue 7 / IEEE Std 1003.1-2008:

  If the name contains one or more <slash> characters, name shall be interpreted
  as a pathname where the created locale definitions shall be stored.

The path can latter be used as LC_* environment variables values:
 
  The value that is used to specify a locale when using environment variables 
  shall be the string specified as the name operand to the localedef  utility 
  when the locale was created.

  [...]

  When the value of a locale environment variable begins with a <slash> ( '/' ), 
  it shall be interpreted as the pathname of the locale definition; the type of 
  file (regular, directory, and so on) used to store the locale definition is 
  implementation-defined. 


Example: LC_ALL=$PWD/fr_FR.UTF-8 locale

But this doesn't work under GLIBC.

According to strace: setlocale() implementation first look to "locale-archive",
then search the LC_ALL value in a directory lookup, e.g. the system directory,
defined at build time. See the following log:

open("/opt/glibc-devel/lib/locale//home/ydroneaud/tmp/fr_FR.UTF-8//LC_CTYPE",
O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/glibc-devel/lib/locale//home/ydroneaud/tmp/fr_FR.utf8/LC_CTYPE",
O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/glibc-devel/lib/locale//home/ydroneaud/tmp/fr_FR/LC_CTYPE", O_RDONLY)
= -1 ENOENT (No such file or directory)
open("/opt/glibc-devel/lib/locale//home/ydroneaud/tmp/fr.UTF-8//LC_CTYPE",
O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/glibc-devel/lib/locale//home/ydroneaud/tmp/fr.utf8/LC_CTYPE",
O_RDONLY) = -1 ENOENT (No such file or directory)
open("/opt/glibc-devel/lib/locale//home/ydroneaud/tmp/fr/LC_CTYPE", O_RDONLY) =
-1 ENOENT (No such file or directory)

Where /opt/glibc-devel/lib/locale is the system locale directory and
/home/tmp/ydroneaud/tmp/fr_FR.UTF-8 the path given as LC_ALL.

-- 
           Summary: setlocale() doesn't support path based locale
                    specification
           Product: glibc
           Version: 2.12
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: yann at droneaud dot fr
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=11635

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