[#CRYPTO_free_ex_index]
= CRYPTO&lowbar;free&lowbar;ex&lowbar;index
:mrdocs:

Release an application ex&lowbar;data index previously allocated for a class (historically a no&hyphen;op cleanup)&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
CRYPTO&lowbar;free&lowbar;ex&lowbar;index(
    int class&lowbar;index,
    int idx);
----

== Return Value

1 on success, or 0 on failure&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *class&lowbar;index*
| CRYPTO&lowbar;EX&lowbar;INDEX&lowbar;&ast; identifying the object class&period;
| *idx*
| Index returned by CRYPTO&lowbar;get&lowbar;ex&lowbar;new&lowbar;index()&period;
|===


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