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.\" $OpenBSD: ERR_print_errors.3,v 1.2 2016/11/06 15:52:50 jmc Exp $
.\"
.Dd $Mdocdate: November 6 2016 $
.Dt ERR_PRINT_ERRORS 3
.Os
.Sh NAME
.Nm ERR_print_errors ,
.Nm ERR_print_errors_fp
.Nd print OpenSSL error messages
.Sh SYNOPSIS
.In openssl/err.h
.Ft void
.Fo ERR_print_errors
.Fa "BIO *bp"
.Fc
.Ft void
.Fo ERR_print_errors_fp
.Fa "FILE *fp"
.Fc
.Sh DESCRIPTION
.Fn ERR_print_errors
is a convenience function that prints the error strings for all errors
that OpenSSL has recorded to
.Fa bp ,
thus emptying the error queue.
.Pp
.Fn ERR_print_errors_fp
is the same, except that the output goes to a
.Vt FILE .
.Pp
The error strings have the following format:
.Bd -literal
[pid]:error:[error code]:[library name]:[function name]:[reason string]:
[file name]:[line]:[optional text message]
.Ed
.Pp
The error code is an 8 digit hexadecimal number.
The library name, the function name, and the reason string are ASCII
text, as is the optional text message if one was set for the
respective error code.
.Pp
If there is no text string registered for the given error code, the
error string will contain the numeric code.
.Sh RETURN VALUES
.Fn ERR_print_errors
and
.Fn ERR_print_errors_fp
return no values.
.Sh SEE ALSO
.Xr ERR 3 ,
.Xr ERR_error_string 3 ,
.Xr ERR_get_error 3 ,
.Xr ERR_load_crypto_strings 3 ,
.Xr SSL_load_error_strings 3
.Sh HISTORY
.Fn ERR_print_errors
and
.Fn ERR_print_errors_fp
are available in all versions of SSLeay and OpenSSL.
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