Record Case Detail

Notes

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

Stderr

=================================================================
==9311==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x7ffc87fcbf60 in thread T0
    #0 0x7f52ba0b89c8 in operator delete(void*, unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe19c8)
    #1 0x5623ef6e7a9c in Dlist<int>::removeFront() (/out/package/dlist_mem+0x17a9c)
    #2 0x5623ef6e4d28 in case4() (/out/package/dlist_mem+0x14d28)
    #3 0x5623ef6e2cf1 in main (/out/package/dlist_mem+0x12cf1)
    #4 0x7f52b8945b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #5 0x5623ef6e3299 in _start (/out/package/dlist_mem+0x13299)

Address 0x7ffc87fcbf60 is located in stack of thread T0 at offset 208 in frame
    #0 0x5623ef6e4b4f in case4() (/out/package/dlist_mem+0x14b4f)

  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 o

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.