Is it possible to use cppcheck to check if a union has been initialized?

Question

Recently I found a mistake in my code. it's about an union type local variable has not been initialized, so that there will be unexpected data in the memory.

I'm curious if there is a way to use static analysis tool such as Cppcheck to find similar problems elsewhere in my existing projects. After learning how to use Cppcheck, I found that there's only some MISRA-C style warning such as "The union keyword should not be used" in the code section where I used union local variable. So my question is, is it possible to use Cppcheck to check if the union has been initialized?

Thanks for your time.

Here's my demo code:

typedef unsigned char UBYTE;
typedef unsigned short UWORD;

typedef union
{
    UWORD  word;
    struct
    {       
        UBYTE Lbyte;
        UBYTE Hbyte;    
    }byte;
    struct
    {
        UWORD LBLbit4:4;
        UWORD LBHbit4:4;
        UWORD HBLbit4:4;
        UWORD HBHbit4:4;
    }bit4;
    struct
    {
         UWORD bit0:1;
         UWORD bit1:1;
         UWORD bit2:1;
         UWORD bit3:1;
         UWORD bit4:1;
         UWORD bit5:1;
         UWORD bit6:1;
         UWORD bit7:1;
         UWORD bit8:1;
         UWORD bit9:1;
         UWORD bit10:1;
         UWORD bit11:1;
         UWORD bit12:1;
         UWORD bit13:1;
         UWORD bit14:1;
         UWORD bit15:1;
         
    }bit;   
}uuWORD;

static UWORD UpdateBit12(UWORD flag)
{
    uuWORD data;

    if(flag == (UWORD)1)
    {
        data.bit.bit12 = 1;
    }
    else
    {
        data.bit.bit12 = 0;
    }

    return data.word;
}