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=head1 NAME

ERR_load_strings, ERR_PACK, ERR_get_next_error_library - load
arbitrary error strings

=head1 SYNOPSIS

 #include <openssl/err.h>

 void ERR_load_strings(int lib, ERR_STRING_DATA str[]);

 int ERR_get_next_error_library(void);

 unsigned long ERR_PACK(int lib, int func, int reason);

=head1 DESCRIPTION

ERR_load_strings() registers error strings for library number B<lib>.

B<str> is an array of error string data:

 typedef struct ERR_string_data_st
 {
        unsigned long error;
        char *string;
 } ERR_STRING_DATA;

The error code is generated from the library number and a function and
reason code: B<error> = ERR_PACK(B<lib>, B<func>, B<reason>).
ERR_PACK() is a macro.

The last entry in the array is {0,0}.

ERR_get_next_error_library() can be used to assign library numbers
to user libraries at runtime.

=head1 RETURN VALUE

ERR_load_strings() returns no value. ERR_PACK() return the error code.
ERR_get_next_error_library() returns a new library number.

=head1 SEE ALSO

L<err(3)|err(3)>, L<ERR_load_strings(3)|ERR_load_strings(3)>

=head1 HISTORY

ERR_load_error_strings() and ERR_PACK() are available in all versions
of SSLeay and OpenSSL. ERR_get_next_error_library() was added in
SSLeay 0.9.0.

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