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Editorial Team
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Asked: 2026-05-18T08:23:03+00:00

char * val; val = getenv("ENV_VAR_NAME"); above is a code to get environment variable,

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char * val;
val = getenv("ENV_VAR_NAME");

above is a code to get environment variable, will it cause memory leak if I dont free memory returned by getenv(char*) ? If no then please answer why?

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1 Answer

  1. Editorial Team

    No you shouldn’t. Standard 7.20.4.5 says :

    The getenv function returns a pointer
    to a string associated with the
    matched list member. The string
    pointed to shall not be modified by
    the program    , but may be overwritten by
    a subsequent call to the getenv
    function.

    I believe deletion is covered by the text in bold.

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