Debounce switch routine watchdog not work

#include <msp430.h> 

/*
 * main.c
 */

#define button1     BIT5
#define button2     BIT4
#define button3     BIT3

#define led1    BIT0
#define led2    BIT1
#define led3    BIT2

#define  ledTotal    (led1 | led2| led3)
#define  buttonTotal     (button1 | button2| button3)

void main(void) {
    WDTCTL = WDTPW | WDTHOLD;	// Stop watchdog timer
	
    BCSCTL1 = CALBC1_1MHZ;// Use 1Mhz cal data for DCO
    DCOCTL  = CALDCO_1MHZ;// Use 1Mhz cal data for DCO

    P1DIR |= ledTotal;
    P1OUT |= buttonTotal;         //on pullups
    P1OUT &=~ ledTotal;
    P1REN |= buttonTotal;        // up pullups

    P1IES |= buttonTotal;	 //interrupT hig to low edge
    P1IFG &=~ buttonTotal;       //Flag to  0
    P1IE  |= buttonTotal;        //Activ interrupt button


    __enable_interrupt();

    while(1){

    }

}
#pragma vector=PORT1_VECTOR
   __interrupt void Port_1(void) {

	   P1IE &=~ buttonTotal;     //disable interrupt


	   WDTCTL = WDT_MDLY_32;    // start WDT, interrupt after 32ms (depending on your clock)
	   IFG1 &= ~WDTIFG;         // clear WDT flag
	   IE1 |= WDTIE;            // enable WDT interrupt


	   if((P1IN & button1)==0x00){
		   P1OUT ^= led1;
	   }
	   if((P1IN & button2)==0x00){
	   		   P1OUT ^= led2;
	   	   }
	   if((P1IN & button3)==0x00){
	   		   P1OUT ^= led3;
	   	   }

	   P1IE |= buttonTotal;				//activ interrupt
	   P1IFG &=~ buttonTotal;		    //clean flag
}


#pragma vector=WDT_VECTOR
__interrupt void WDT_ISR(void)
{
    IE1 &= ~WDTIE;               // disable WDT interrupt
    IFG1 &= ~WDTIFG;              // clear flag
    WDTCTL = WDTPW + WDTHOLD;    // hold WDT
    P1IE |= buttonTotal;         // enable interrupts on S2
}