[#BIO_vfree]
= BIO_vfree
:mrdocs:

Free a BIO and every BIO linked after it in the chain.

== Synopsis

Declared in `<openssl/bio.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
BIO_vfree(xref:BIO.adoc[BIO]* a);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| First BIO in the chain to free; NULL is ignored.
|===


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