curl_slist_free_all(3)

curl_slist_free_all3

Free an entire curl_slist list

Usage

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

Overview

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.

Protocols

This functionality affects all supported protocols

Examples

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 */
}

Return value

Nothing.

Releases

13 releases since Debian 3.0 (Woody); the text changed 9 times.

  1. 3.0
  2. 3.1–5.0
  3. 6.0
  4. 7–8
  5. 9
  6. 10
  7. 11
  8. 12
  9. 13
  10. Arch

Availability

Added in curl 7.1

From curl 8.23.0-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.