@@ -23,6 +23,7 @@

 #endif

 #include "7z/LzmaDec.h"

+#include "7z/XzCrc64.h"

 #include "xz_iface.h"

 void *__xz_wrap_alloc(void *unused, size_t size) { 

@@ -59,7 +60,8 @@ static unsigned char xz_getbyte(struct CLI_XZ *L, int *fail) {

 int cli_XzInit(struct CLI_XZ *XZ) {

     if (SZ_OK != XzUnpacker_Create(&XZ->state, &g_Alloc))

         return XZ_RESULT_DATA_ERROR;

-    Crc64GenerateTable();

+    if (g_Crc64Table[1] == 0)

+        Crc64GenerateTable();

     return XZ_RESULT_OK;

 }