Synopsis

(Required) External identifiers shall be distinct.

Enabled by default

Yes

Severity/Certainty

Low/Medium

Full description

An external identifier was found that is not unique for the first 31 characters, but still not identical to another identifier.

This is a link analysis check.

Coding standards

Code examples

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

/* file1.c
int ABC;
 */
int ABC;

void example1 (void) {
}

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

/* file1.c
int ABC;
 */
int a;

void example2 (void) {
}