Manpages - curl_free.3

curl_free - reclaim memory that has been obtained through a libcurl call

#include <curl/curl.h>

void curl_free( char **/ptr/ );*

curl_free reclaims memory that has been obtained through a libcurl call. Use curl_free(3) instead of free() to avoid anomalies that can result from differences in memory management between your application and libcurl.

Passing in a NULL pointer in ptr will make this function return immediately with no action.

    char *width = curl_getenv("COLUMNS");
    if(width) {
      /* it was set! */
      curl_free(width);
    }

Always

None

*curl_easy_unescape*(3), *curl_easy_escape*(3)