CXX.POSSIBLE_COPY_PASTE.FSTRING.APPEND_SAME_STRING

Possible copy-paste error: Appending the same FString twice.

This checker reports defects when an Fstring is appended to itself.

Vulnerable code example

1
2
3
4
5
   void f1()
   {
   FString log;
   log.Append(log); 
   }

In the above example, line 4 is noncompliant as the Fstring log is being appended to itself. Klocwork produces a CXX.POSSIBLE_COPY_PASTE.FSTRING.APPEND_SAME_STRING defect at line 4, indicating, "Possible copy-paste error: Appending the same FString twice."

Fixed code example

1
2
3
4
5
   void f1()
   {
   FString log, log1;
   log.Append(log1); 
   }

In the fixed example, Klocwork no longer reports the defect CXX.LOGICAL_OP.INT_OPERAND at line 4.