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authorJay Satiro <raysatiro@yahoo.com>2020-03-02 02:59:40 -0500
committerJay Satiro <raysatiro@yahoo.com>2020-03-02 18:16:23 -0500
commit1722eb83b4adf879426908bc6006f869ca224564 (patch)
treebb84b3f688dbbdf2cc84a5cec527ff4ce3a9b521 /docs/libcurl
parent0b337ecc91f30188987dc441dc1fc67446a86676 (diff)
curl_getenv.3: Fix the memory handling description
- Tell the user to call curl_free() to free the pointer returned by curl_getenv(). Prior to this change the user was directed to call free(), but that would not work in cases where the library and application use separate C runtimes and therefore have separate heap memory management. Closes https://github.com/curl/curl/pull/5016
Diffstat (limited to 'docs/libcurl')
-rw-r--r--docs/libcurl/curl_getenv.38
1 files changed, 4 insertions, 4 deletions
diff --git a/docs/libcurl/curl_getenv.3 b/docs/libcurl/curl_getenv.3
index c6bee98db..b6cc623ba 100644
--- a/docs/libcurl/curl_getenv.3
+++ b/docs/libcurl/curl_getenv.3
@@ -31,15 +31,15 @@ curl_getenv - return value for environment name
curl_getenv() is a portable wrapper for the getenv() function, meant to
emulate its behaviour and provide an identical interface for all operating
systems libcurl builds on (including win32).
+
+You must \fIcurl_free(3)\fP the returned string when you're done with it.
.SH AVAILABILITY
This function will be removed from the public libcurl API in a near future. It
will instead be made "available" by source code access only, and then as
curlx_getenv().
.SH RETURN VALUE
-If successful, curl_getenv() returns a pointer to the value of the specified
-environment. The memory it refers to is malloc()ed so the application must
-free() this when the data is no longer needed. When \fIcurl_getenv(3)\fP fails
-to find the specified name, it returns a null pointer.
+A pointer to a zero terminated string or NULL if it failed to find the
+specified name.
.SH NOTE
Under unix operating systems, there isn't any point in returning an allocated
memory, although other systems won't work properly if this isn't done. The