Synopsis

(Required) In the definition of a function-like macro each instance of a parameter shall be enclosed in parentheses unless it is used as the operand of # or ##.

Enabled by default

Yes

Severity/Certainty

High/Medium

Full description

A macro parameter was not enclosed in parentheses or used as the operand of # or ##.

Coding standards

Code examples

The following code example fails the check and will give a warning:

#define abs(x) ((x >= 0) ? x : -x)

The following code example passes the check and will not give a warning about this issue:

#define abs(x) (((x) >= 0) ? (x) : -(x))