[#CRYPTO_malloc_fn]
= CRYPTO_malloc_fn
:mrdocs:

Allocator callback type used by CRYPTO_set_mem_functions().

== Synopsis

Declared in `<openssl/crypto.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef void*(* CRYPTO_malloc_fn)(size_t, char const*, int);
----

== Return Value

Newly allocated memory, or NULL on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *num*
| Number of bytes to allocate.
| *file*
| Source file recorded with the allocation.
| *line*
| Source line recorded with the allocation.
|===


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