Synopsis

(Required) An explicit integral or floating-point conversion shall not increase the size of the underlying type of a cvalue expression.

Enabled by default

Yes

Severity/Certainty

Low/Medium

Full description

One or more explicit integral or floating-point conversions were found that increase the size of the underlying type of a cvalue expression.

Coding standards

This check does not correspond to any coding standard rules.

Code examples

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

#include <stdint.h>
void f ( )
{
  int16_t s16;
  int32_t s32;
  s32 = static_cast< int32_t > ( s16 + s16 ); // Non-compliant
}

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

#include <stdint.h>
void f ( )
{
  int16_t s16;
  int32_t s32;
  s32 = static_cast< int32_t > ( s16 ) + s16 ; // Compliant
}