Notes
This function is in beta test. Please help improve it in the issues
here.
(/out/package/dlist_mem+0x1c4ac): runtime error: load of null pointer of type 'int'
ASAN:DEADLYSIGNAL
=================================================================
==33682==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x55c7a687404a bp 0x602000000190 sp 0x7ffef8a60fd0 T0)
==33682==The signal is caused by a READ memory access.
==33682==Hint: address points to the zero page.
#0 0x55c7a6874049 in Dlist<int>::removeFront() (/out/package/dlist_mem+0x1c049)
#1 0x55c7a686fa31 in case4() (/out/package/dlist_mem+0x17a31)
#2 0x55c7a686d811 in main (/out/package/dlist_mem+0x15811)
#3 0x7fbe245abb96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#4 0x55c7a686ddb9 in _start (/out/package/dlist_mem+0x15db9)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/out/package/dlist_mem+0x1c049) in Dlist<int>::removeFront()
==33682==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.