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ERR_peek_last_error_line.3ssl
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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" \&\fBERR_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 \&\fBERR_peek_error()\fR returns the earliest error code from the thread's error queue without modifying it. .PP \&\fBERR_peek_last_error()\fR returns the latest error code from the thread's error queue without modifying it. .PP See \s-1\fBERR_GET_LIB\s0\fR\|(3) for obtaining information about location and reason of the error, and \&\fBERR_error_string\fR\|(3) for human-readable error messages. .PP \&\fBERR_get_error_line()\fR, \fBERR_peek_error_line()\fR and \&\fBERR_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 \&\fBERR_get_error_line_data()\fR, \fBERR_peek_error_line_data()\fR and \&\fBERR_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 NOT\s0\fR free the *\fBdata\fR pointer (or any other pointers returned by these functions) with \fBOPENSSL_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. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBerr\fR\|(3), \fBERR_error_string\fR\|(3), \&\s-1\fBERR_GET_LIB\s0\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" \&\fBERR_get_error()\fR, \fBERR_peek_error()\fR, \fBERR_get_error_line()\fR and \&\fBERR_peek_error_line()\fR are available in all versions of SSLeay and OpenSSL. \fBERR_get_error_line_data()\fR and \fBERR_peek_error_line_data()\fR were added in SSLeay 0.9.0. \&\fBERR_peek_last_error()\fR, \fBERR_peek_last_error_line()\fR and \&\fBERR_peek_last_error_line_data()\fR were added in OpenSSL 0.9.7.
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