[#ERR_peek_error]
= ERR_peek_error
:mrdocs:

Return the earliest error code without removing it from the queue.

== Synopsis

Declared in `<openssl/err.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
unsigned long
ERR_peek_error();
----

== Return Value

Packed error code, or 0 if the queue is empty.


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