Notes
This function is in beta test. Please help improve it in the issues
here.
/in/DlistImpl.h:94:9: runtime error: member access within null pointer of type 'struct node'
ASAN:DEADLYSIGNAL
=================================================================
==27873==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x56014cfa902c bp 0x6030000000d0 sp 0x7ffef924af70 T0)
==27873==The signal is caused by a WRITE memory access.
==27873==Hint: address points to the zero page.
#0 0x56014cfa902b in Dlist<int>::removeBack() (/out/package/dlist_mem+0x2002b)
#1 0x56014cfa6265 in case4() (/out/package/dlist_mem+0x1d265)
#2 0x56014cfa37b1 in main (/out/package/dlist_mem+0x1a7b1)
#3 0x7fa852426b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#4 0x56014cfa42d9 in _start (/out/package/dlist_mem+0x1b2d9)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/out/package/dlist_mem+0x2002b) in Dlist<int>::removeBack()
==27873==ABORTING
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.