Record Case Detail

Notes

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

Stderr

=================================================================
==18409==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x7fffa35b5980 in thread T0
    #0 0x7f2d86b069c8 in operator delete(void*, unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe19c8)
    #1 0x557a60d37e8c in Dlist<int>::removeFront() (/out/package/dlist_mem+0x17e8c)
    #2 0x557a60d34ff8 in case4() (/out/package/dlist_mem+0x14ff8)
    #3 0x557a60d32fc1 in main (/out/package/dlist_mem+0x12fc1)
    #4 0x7f2d85393b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #5 0x557a60d33569 in _start (/out/package/dlist_mem+0x13569)

Address 0x7fffa35b5980 is located in stack of thread T0 at offset 208 in frame
    #0 0x557a60d34e1f in case4() (/out/package/dlist_mem+0x14e1f)

  This frame has 2 object(s):
    [32, 48) 'list1'
    [96, 112) 'list2' <== Memory access at offset 208 overflows this variable
HINT: this may be a false positive if your program uses some custom stack unwind mechanism 

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.