[#CRYPTO_free_ex_data]
= CRYPTO&lowbar;free&lowbar;ex&lowbar;data
:mrdocs:

Free all ex&lowbar;data attached to `ad` for the given class, invoking free callbacks&period;

== Synopsis

Declared in `&lt;openssl&sol;crypto&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
CRYPTO&lowbar;free&lowbar;ex&lowbar;data(
    int class&lowbar;index,
    void* obj,
    xref:CRYPTO_EX_DATA.adoc[CRYPTO&lowbar;EX&lowbar;DATA]* ad);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *class&lowbar;index*
| CRYPTO&lowbar;EX&lowbar;INDEX&lowbar;&ast; identifying the object class&period;
| *obj*
| Object that owns `ad` (passed to free callbacks)&period;
| *ad*
| Ex&hyphen;data table to clear&period;
|===


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