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From "Farid Zaripov (JIRA)" <>
Subject [jira] Created: (STDCXX-646) [MSVC] rw_putenv() have a limitations
Date Wed, 07 Nov 2007 15:15:53 GMT
[MSVC] rw_putenv() have a limitations

                 Key: STDCXX-646
             Project: C++ Standard Library
          Issue Type: Bug
          Components: Test Driver
    Affects Versions: 4.2
         Environment: MSVC, ICC/Windows
            Reporter: Farid Zaripov
             Fix For: 4.2.1

In 0.printf.cpp test the rw_putenv() is used to define variable to null and to undefine variable.

1.    rw_putenv ("NULL=");   // define to null (empty string)
2.    rw_putenv ("UNSET");   // undefine if defined

  But on MSVC putenv() could not define variable to null, so:
1. rw_putenv ("NULL="); undefines the NULL variable instead defining it to null;
2. rw_putenv ("UNSET"); does nothing instead of undefining variable

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