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This rule appears in the C++ Secure Coding Standard as ENV31-CPP. Do not rely on an environment pointer following an operation that may invalidate it.
References
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\[[ISO/IEC 9899:1999|AA. C References#ISO/IEC 9899-1999]\] Section J.5.1, "Environment Arguments"
\[[MSDN|AA. C References#MSDN]\] [{{getenv, _wgetenv}}|http://msdn.microsoft.com/en-us/library/tehxacec.aspx], [{{_environ, _wenviron}}|http://msdn.microsoft.com/en-us/library/stxk41x1.aspx], [{{_putenv_s, _wputenv_s}}|http://msdn.microsoft.com/en-us/library/eyw7eyfw.aspx]
\[[Open Group 04|AA. C References#Open Group 04]\] [{{setenv()}}|http://www.opengroup.org/onlinepubs/009695399/functions/setenv.html] |
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