No operators in #if

[John C]

The MISRA checker I am using is rejecting operators in #if as noted in the following code.

Code:

#define TRUE 1

#define Condition1 TRUE
#define Condition2 TRUE

#if Condition1   /* Accepted */
#endif
#if !Condition1  /* Rejected */
/* Rejection is because:
Unpermitted operand to operator '!' [MISRA 2012 Rule 10.1, required]
*/
#endif
#if Condition1 && Condition2  /* Rejected */
/* Rejection is because:
Unpermitted operand to operator '&&' [MISRA 2012 Rule 10.1, required]
*/
#endif
#if Condition1 || Condition2  /* Rejected */
/* Rejection is because:
Unpermitted operand to operator '||' [MISRA 2012 Rule 10.1, required]
*/
#endif

According to the supplier, the constant '1' (or '0' when used in the same way) is being interpreted as a signed int and therefore the operators '!', '&&' and '||' cannot be used with it.

Is the checker's interpretation correct?