use of memset and optimization

[Jeffrey Altman]

And ... Does optimization occur for?  I would assume not.

void i(char *buf, int len)
{
    char * key;
   
    key = (char *)malloc(64);
  
    strncpy(key, "seekrit89012345", 64);
    encrypt(buf, len, key);
    memset(key, 0, 64);
    free(key);
}


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