Issue in move constructor

Question

Hi

Can anyone help me understand issue with below code ?

It is run time error occurred when I am moving object.
https://code.sololearn.com/c3Vs4rhwjyDL/?ref=app

Answer 1

Considering that `pdata` is uninitialized in the move constructor, the loop

for (int i = 0;i<size;++i)
pdata[i] = obj.pdata[i];

invokes undefined behaviour as you are writing into undefined memory.
For a move constructor, simply copying the pointer instead of the elements would make more sense:

pdata = obj.pdata;