MISRA.FOR.COND.CHANGE

For loop condition modifies loop counter.

MISRA-C++ Rule 6-5-3 (required): The loop-counter shall not be modified within condition or statement.

This rule is also covered by MISRA.FOR.STMT.CHANGE.

Rationale

Modification of the loop-counter other than in expression leads to a badly-formed for loop.

Example

bool modify ( int32_t * pX )
{
   *pX++;
   return ( *pX < 10 );
}
for ( x = 0; modify ( &x ); ) // Non-compliant
{
}
for ( x = 0; x < 10; )
{
   x = x * 2;                 // Non-compliant
}