[WARNING]
The result of an expression outside a condition is not used. In ANSI-C it is legal to write code as in the example below. Some programmers are using such a statement to enforce only a read access to a variable without write access, but in most cases the compiler will optimize such statements away.
int i;
i+1; // should be 'i=1;', but programming error
If it is a programming error, correct the statement.