Record Case Detail

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ASAN:DEADLYSIGNAL
=================================================================
==24714==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x564fab64323a bp 0x6020000068d0 sp 0x7fffb91829c0 T0)
==24714==The signal is caused by a WRITE memory access.
==24714==Hint: address points to the zero page.
    #0 0x564fab643239 in Dlist<int>::removeBack() (/out/package/sam_mem+0x5239)
    #1 0x564fab641a17 in main (/out/package/sam_mem+0x3a17)
    #2 0x7f3f8ce63b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #3 0x564fab642ad9 in _start (/out/package/sam_mem+0x4ad9)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/out/package/sam_mem+0x5239) in Dlist<int>::removeBack()
==24714==ABORTING

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.

1410229087 1874512964 430196835 
430196835 1438094767 467627935 1791930715 1603175461 1344448245 1793516632 1438094767 1793516632 515004171 1515923624 1342466754 193413795 1307894613 1042579436 1342466754

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