Record Case Detail

Notes

This function is in beta test. Please help improve it in the issues here.

Stderr

=================================================================
==24661==ERROR: AddressSanitizer: heap-use-after-free on address 0x6030000000a0 at pc 0x556e759b108c bp 0x7fffeef5c3e0 sp 0x7fffeef5c3d0
WRITE of size 8 at 0x6030000000a0 thread T0
    #0 0x556e759b108b in Dlist<int>::removeBack() (/out/package/dlist_mem+0x608b)
    #1 0x556e759ae93e in case3() (/out/package/dlist_mem+0x393e)
    #2 0x556e759ad847 in main (/out/package/dlist_mem+0x2847)
    #3 0x7f3592dbcb96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #4 0x556e759ae0b9 in _start (/out/package/dlist_mem+0x30b9)

0x6030000000a0 is located 0 bytes inside of 24-byte region [0x6030000000a0,0x6030000000b8)
freed by thread T0 here:
    #0 0x7f359380e9c8 in operator delete(void*, unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe19c8)
    #1 0x556e759b1523 in Dlist<int>::removeFront() (/out/package/dlist_mem+0x6523)
    #2 0xffffddeb89f  (<unknown module>)

previously allocated by thread T0 here:
    #0 0x7f359380d448 in 

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.