SEI CERT C Coding Standard

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changes.mady.by.user Shaun Hedrick

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Note that this example also violates rule \[[DCL30-C. DoDeclare notobjects referwith toappropriate an object outside of its lifetimestorage durations]\].

Code Block
bgColor#FFCCCC
int func(char *var) {
  char env[1024];

  if (snprintf(env, sizeof(env),"TEST=%s", var) < 0) {
    /* Handle Error */
  }

  return putenv(env);
}

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Wiki Markup
\[[Open Group 04|AA. C++ References#Open Group 04]\] The putenv() function
\[[ISO/IEC 9899-1999|AA. C References#ISO/IEC 9899-1999]\] Section 6.2.4, "Storage durations of objects," and Section 7.20.3, "Memory management functions"
\[[Dowd|AA. C References#Dowd 06]\] Chapter 10, "UNIX Processes" (Confusing putenv() and setenv())
\[[DCL30-C. DoDeclare notobjects referwith toappropriate an object outside of its lifetimestorage durations]\]