=head1 DESCRIPTION
ERR_error_string() generates a human-readable string representing the
-error code I<e>, and places it at I<buf>. I<buf> must be at least 120
+error code I<e>, and places it at I<buf>. I<buf> must be at least 256
bytes long. If I<buf> is B<NULL>, the error string is placed in a
static buffer.
+Note that this function is not thread-safe and does no checks on the size
+of the buffer; use ERR_error_string_n() instead.
+
ERR_error_string_n() is a variant of ERR_error_string() that writes
at most I<len> characters (including the terminating 0)
and truncates the string if necessary.
ERR_reason_error_string() return the library name, function
name and reason string respectively.
-The OpenSSL error strings should be loaded by calling
-L<ERR_load_crypto_strings(3)> or, for SSL
-applications, L<SSL_load_error_strings(3)>
-first.
If there is no text string registered for the given error code,
the error string will contain the numeric code.
=head1 SEE ALSO
L<err(3)>, L<ERR_get_error(3)>,
-L<ERR_load_crypto_strings(3)>,
-L<SSL_load_error_strings(3)>
L<ERR_print_errors(3)>
-=head1 HISTORY
-
-ERR_error_string() is available in all versions of SSLeay and OpenSSL.
-ERR_error_string_n() was added in OpenSSL 0.9.6.
-
=cut