Getting the sizeof of an implicitly sized char array

Question | Jul 16, 2019 | jmiller 

In a function process, the sizeof of a char array is printed as:

void process() { 
 char str[] = "Hello";
 // .... 
 std::cout << sizeof str << std::endl;

What will be printed if the above code is run on a machine where sizeof(char*) is 8: