curl_slist_free_all - free an entire curl_slist list

Added in curl 7.1

curl_slist_free_all() removes all traces of a previously built curl_slist linked list. Passing in a NULL pointer in list makes this function return immediately with no action. Any use of the list after this function has been called and have returned, is illegal.

int main(void) { CURL *handle = curl_easy_init(); struct curl_slist *slist = NULL; slist = curl_slist_append(slist, "X-libcurl: coolness"); if(!slist) return -1; curl_easy_setopt(handle, CURLOPT_HTTPHEADER, slist); curl_easy_perform(handle); curl_slist_free_all(slist); /* free the list again */ }

curl_slist_free_all - free an entire curl_slist list

This functionality affects all supported protocols

Nothing.

curl_slist_append(3) libcurl 2025-06-16 curl_slist_free_all(3)

#include <curl/curl.h> void curl_slist_free_all(struct curl_slist *list);