http://bugs.winehq.org/show_bug.cgi?id=24536
--- Comment #2 from Simon Josefsson simon@josefsson.org 2010-09-27 04:39:26 CDT --- I noticed the problem when running the self tests that comes with GNU SASL. Two of the self tests actually comes from gnulib, and it tests whether environ/putenv is working properly.
See more discussion at http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/23262