[#ERR_vset_error]
= ERR_vset_error
:mrdocs:

Push an error onto the thread's error queue with a printf‐style detail (va_list form).

== Synopsis

Declared in `<openssl/err.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
ERR_vset_error(
    int lib,
    int reason,
    char const* fmt,
    va_list args);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *lib*
| Library number (ERR_LIB_*).
| *reason*
| Reason code within that library.
| *fmt*
| Optional printf‐style detail format, or NULL.
| *args*
| Variadic arguments matching `fmt.`
|===


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