[#ERR_vset_error]
= ERR&lowbar;vset&lowbar;error
:mrdocs:

Push an error onto the thread&apos;s error queue with a printf&hyphen;style detail (va&lowbar;list form)&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
ERR&lowbar;vset&lowbar;error(
    int lib,
    int reason,
    char const* fmt,
    va&lowbar;list args);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *lib*
| Library number (ERR&lowbar;LIB&lowbar;&ast;)&period;
| *reason*
| Reason code within that library&period;
| *fmt*
| Optional printf&hyphen;style detail format, or NULL&period;
| *args*
| Variadic arguments matching `fmt&period;`
|===


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