Synopsis

(Required) All resources obtained dynamically by means of Standard Library functions shall be explicitly released

Enabled by default

Yes

Severity/Certainty

Medium/Medium

Full description

A file pointer is never closed. This check is identical to MISRAC2012-Dir-4.13_c, RESOURCE-file-no-close-all, SEC-FILEOP-open-no-close, CERT-FIO42-C_a.

Coding standards

Code examples

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

#include <stdio.h>

void example(void) {
  FILE *fp = fopen("test.txt", "c");
}

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

#include <stdio.h>

void example(void) {
  FILE *fp = fopen("test.txt", "c");
  fclose(fp);
}