.\" ************************************************************************** .\" * _ _ ____ _ .\" * Project ___| | | | _ \| | .\" * / __| | | | |_) | | .\" * | (__| |_| | _ <| |___ .\" * \___|\___/|_| \_\_____| .\" * .\" * Copyright (C) Daniel Stenberg, , et al. .\" * .\" * This software is licensed as described in the file COPYING, which .\" * you should have received as part of this distribution. The terms .\" * are also available at https://curl.se/docs/copyright.html. .\" * .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell .\" * copies of the Software, and permit persons to whom the Software is .\" * furnished to do so, under the terms of the COPYING file. .\" * .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY .\" * KIND, either express or implied. .\" * .\" * SPDX-License-Identifier: curl .\" * .\" ************************************************************************** .TH curl_free 3 "12 Aug 2003" "libcurl" "libcurl" .SH NAME curl_free - reclaim memory that has been obtained through a libcurl call .SH SYNOPSIS .nf #include void curl_free(void *ptr); .fi .SH DESCRIPTION curl_free reclaims memory that has been obtained through a libcurl call. Use \fIcurl_free(3)\fP 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 \fIptr\fP makes this function return immediately with no action. .SH EXAMPLE .nf int main(void) { char *width = curl_getenv("COLUMNS"); if(width) { /* it was set! */ curl_free(width); } } .fi .SH AVAILABILITY Always .SH RETURN VALUE None .SH "SEE ALSO" .BR curl_easy_escape (3), .BR curl_easy_unescape (3)