MISRA.SWITCH.WELL_FORMED.TWO_CLAUSES.2012

Every switch statement shall have at least two switch-clauses.

MISRA C 2012 Rule 16.6: Every switch statement shall have at least two switch-clauses

Category: Required

Analysis: Decidable, Single Translation Unit

Applies to: C90, C99

Rationale

A switch statement with a single path is redundant and may be indicative of a programming error.

Example

switch ( x ) 
{
  default:     /* Non-compliant - switch is redundant */
    x = 0; 
    break; 
}

switch ( y ) 
{
  case 1: 
  default:     /* Non-compliant - switch is redundant */
    y = 0; 
    break; 
}

switch ( z ) 
{
  case 1:
    z = 2; 
    break; 
  default:     /* Compliant                           */
    z = 0; 
    break; 
}

See also

Rule 16.1