ERR_load_strings, ERR_PACK, ERR_get_next_error_library - load arbitrary error strings
#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);
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: error = ERR_PACK(lib, func, 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.
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