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.\" ========================================================================
.\"
.IX Title "ERR_get_error 3openssl"
.TH ERR_get_error 3openssl "2016-05-03" "1.0.1t" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
ERR_get_error, ERR_peek_error, ERR_peek_last_error,
ERR_get_error_line, ERR_peek_error_line, ERR_peek_last_error_line,
ERR_get_error_line_data, ERR_peek_error_line_data,
ERR_peek_last_error_line_data \- obtain error code and data
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/err.h>
\&
\& unsigned long ERR_get_error(void);
\& unsigned long ERR_peek_error(void);
\& unsigned long ERR_peek_last_error(void);
\&
\& unsigned long ERR_get_error_line(const char **file, int *line);
\& unsigned long ERR_peek_error_line(const char **file, int *line);
\& unsigned long ERR_peek_last_error_line(const char **file, int *line);
\&
\& unsigned long ERR_get_error_line_data(const char **file, int *line,
\&         const char **data, int *flags);
\& unsigned long ERR_peek_error_line_data(const char **file, int *line,
\&         const char **data, int *flags);
\& unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
\&         const char **data, int *flags);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fIERR_get_error()\fR returns the earliest error code from the thread's error
queue and removes the entry. This function can be called repeatedly
until there are no more error codes to return.
.PP
\&\fIERR_peek_error()\fR returns the earliest error code from the thread's
error queue without modifying it.
.PP
\&\fIERR_peek_last_error()\fR returns the latest error code from the thread's
error queue without modifying it.
.PP
See \s-1\fIERR_GET_LIB\s0\fR\|(3) for obtaining information about
location and reason of the error, and
\&\fIERR_error_string\fR\|(3) for human-readable error
messages.
.PP
\&\fIERR_get_error_line()\fR, \fIERR_peek_error_line()\fR and
\&\fIERR_peek_last_error_line()\fR are the same as the above, but they
additionally store the file name and line number where
the error occurred in *\fBfile\fR and *\fBline\fR, unless these are \fB\s-1NULL\s0\fR.
.PP
\&\fIERR_get_error_line_data()\fR, \fIERR_peek_error_line_data()\fR and
\&\fIERR_peek_last_error_line_data()\fR store additional data and flags
associated with the error code in *\fBdata\fR
and *\fBflags\fR, unless these are \fB\s-1NULL\s0\fR. *\fBdata\fR contains a string
if *\fBflags\fR&\fB\s-1ERR_TXT_STRING\s0\fR is true.
.PP
An application \fB\s-1MUST\s0 \s-1NOT\s0\fR free the *\fBdata\fR pointer (or any other pointers
returned by these functions) with \fIOPENSSL_free()\fR as freeing is handled
automatically by the error library.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
The error code, or 0 if there is no error in the queue.

.\" Oracle has added the ARC stability level to this manual page
.SH ATTRIBUTES
See
.BR attributes (5)
for descriptions of the following attributes:
.sp
.TS
box;
cbp-1 | cbp-1
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE 
=
Availability	library/security/openssl
=
Stability	Uncommitted
.TE 
.PP
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIerr\fR\|(3), \fIERR_error_string\fR\|(3),
\&\s-1\fIERR_GET_LIB\s0\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
\&\fIERR_get_error()\fR, \fIERR_peek_error()\fR, \fIERR_get_error_line()\fR and
\&\fIERR_peek_error_line()\fR are available in all versions of SSLeay and
OpenSSL. \fIERR_get_error_line_data()\fR and \fIERR_peek_error_line_data()\fR
were added in SSLeay 0.9.0.
\&\fIERR_peek_last_error()\fR, \fIERR_peek_last_error_line()\fR and
\&\fIERR_peek_last_error_line_data()\fR were added in OpenSSL 0.9.7.


.SH NOTES

.\" Oracle has added source availability information to this manual page
This software was built from source available at https://java.net/projects/solaris-userland.  The original community source was downloaded from  http://www.openssl.org/source/openssl-1.0.1t.tar.gz

Further information about this software can be found on the open source community website at http://www.openssl.org/.