[#CRYPTO_free_ex_index]
= CRYPTO_free_ex_index
:mrdocs:

Release an application ex_data index previously allocated for a class (historically a no‐op cleanup).

== Synopsis

Declared in `<openssl/crypto.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
CRYPTO_free_ex_index(
    int class_index,
    int idx);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *class_index*
| CRYPTO_EX_INDEX_* identifying the object class.
| *idx*
| Index returned by CRYPTO_get_ex_new_index().
|===


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