Synopsis

(Required) The value of a composite expression shall not be assigned to an object with wider essential type

Enabled by default

Yes

Severity/Certainty

Medium/Medium

Full description

The value of a composite expression is assigned to an object with wider essential type.

Coding standards

Code examples

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

#include <stdint.h>

void example(void) {
  uint16_t a = 5;
  uint16_t b = 10;
  uint32_t c;
  c = a + b;
}

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

#include <stdint.h>

void example(void) {
  uint16_t a;
  uint16_t b;
  b = a + a;
}