Interupt action when enabling interupt with interupt flag "1"

[Lauris]

Hello everyone,

Was wondering if anyone can explain interupt handler actions in case of enabling interupt with interupt source flag already set.

To be more precise processor - LPC2368, fragment of code;

*
*  *
*  *  *   //U0LSR.5 (THRE) = 1 somewhere before line below
                U0IER |= (1 << 1);      //Enable TRHE interupts if they were disabled
*  *  *
*  *  
*

void uart0_ (void) __irq {
  switch (U0IIR & 0x0E) {       //swich depending on interupt received
        case 0x06:                              
        break;
        case 0x04:                      
        break;
        case 0x0C:              
        break;
        case 0x02:              //<<<<<< will it come here                                              
        break;
  }
  VICVectAddr = 0x00;
}

so in case of action described above will I get interupt executed or do I need to take any extra actions to ensure interupt execution?

tahnk you in advance,
Laurynas.