Notes
This function is in beta test. Please help improve it in the issues
here.
=================================================================
==18750==ERROR: AddressSanitizer: heap-use-after-free on address 0x602000000070 at pc 0x55888a935eec bp 0x7ffd5ee15790 sp 0x7ffd5ee15780
READ of size 4 at 0x602000000070 thread T0
#0 0x55888a935eeb in case4() (/out/package/dlist_mem+0x15eeb)
#1 0x55888a933671 in main (/out/package/dlist_mem+0x13671)
#2 0x7f69969b7b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#3 0x55888a933c19 in _start (/out/package/dlist_mem+0x13c19)
0x602000000070 is located 0 bytes inside of 4-byte region [0x602000000070,0x602000000074)
freed by thread T0 here:
#0 0x7f699812a9c8 in operator delete(void*, unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe19c8)
#1 0x55888a9393a8 in Dlist<int>::copyAll(Dlist<int> const&) (/out/package/dlist_mem+0x193a8)
#2 0x60300000009f (<unknown module>)
previously allocated by thread T0 here:
#0 0x7f6998129448 in operator new(unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.
Hints
Your answer may be identical to the JOJ answer in the first several lines.
However, the main problem you meet now is Runtime Error. And the exit code of your program is 1, which should be 0.
Please double check your code to solve this problem and try again.
Your Answer
JOJ Answer
Test success.