CHECK: Alignment should match open parenthesis
CHECK: Assignment operator '=' should be on the previous line
CHECK: Lines should not end with a '('
CHECK: Macro argument 'op' may be better as '(op)' to avoid precedence issues
CHECK: Unbalanced braces around else statement
CHECK: braces {} should be used on all arms of this statement
CHECK: extern prototypes should be avoided in .h files
WARNING: line length of 83 exceeds 80 columns