ndb - rel5.1.16 NdbRecAttr print of blob length assumed uint64 aligned buffer

ndb - 5.1.16 uint64 align for ndb_restore
(backport)

ndb/src/ndbapi/NdbRecAttr.cpp

@@ -346,24 +346,24 @@ NdbOut& operator<<(NdbOut& out, const NdbRecAttr &r)
         }
 	break;
       case NdbDictionary::Column::Blob:
-        {
-          const NdbBlob::Head* h = (const NdbBlob::Head*)r.aRef();
-          out << h->length << ":";
-          const unsigned char* p = (const unsigned char*)(h + 1);
-          unsigned n = r.arraySize() - sizeof(*h);
-          for (unsigned k = 0; k < n && k < h->length; k++)
-            out.print("%02X", (int)p[k]);
-          j = length;
-        }
-        break;
       case NdbDictionary::Column::Text:
       {
-          const NdbBlob::Head* h = (const NdbBlob::Head*)r.aRef();
-          out << h->length << ":";
-          const unsigned char* p = (const unsigned char*)(h + 1);
-          unsigned n = r.arraySize() - sizeof(*h);
-          for (unsigned k = 0; k < n && k < h->length; k++)
+        // user defined aRef() may not be aligned to Uint64
+        NdbBlob::Head head;
+        memcpy(&head, r.aRef(), sizeof(head));
+        out << head.length << ":";
+        const unsigned char* p = (const unsigned char*)r.aRef() + sizeof(head);
+        if (r.arraySize() < sizeof(head))
+          out << "***error***"; // really cannot happen
+        else {
+          unsigned n = r.arraySize() - sizeof(head);
+          for (unsigned k = 0; k < n && k < head.length; k++) {
+            if (r.getType() == NdbDictionary::Column::Blob)
+              out.print("%02X", (int)p[k]);
+            else
               out.print("%c", (int)p[k]);
+          }
+        }
         j = length;
       }
       break;

ndb/tools/restore/Restore.cpp

@@ -54,7 +54,12 @@ BackupFile::Twiddle(const AttributeDesc* attr_desc, AttributeData* attr_data, Ui
     return true;
   case 64:
     for(i = 0; i<arraySize; i++){
-      attr_data->u_int64_value[i] = Twiddle64(attr_data->u_int64_value[i]);
+      // allow unaligned
+      char* p = (char*)&attr_data->u_int64_value[i];
+      Uint64 x;
+      memcpy(&x, p, sizeof(Uint64));
+      x = Twiddle64(x);
+      memcpy(p, &x, sizeof(Uint64));
     }
     return true;
   default: