[#ERR_add_error_vdata]
= ERR_add_error_vdata
:mrdocs:

Append additional string data to the most recent error, from a va_list.

== Synopsis

Declared in `<openssl/err.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
ERR_add_error_vdata(
    int num,
    va_list args);
----

== Description

Like ERR_add_error_data() but takes a va_list; total extra data per error is capped at 4096 characters.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *num*
| Number of `char` * arguments in `args` to concatenate.
| *args*
| va_list of `num` C strings associated with the last error code.
|===


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