Notes
This function is in beta test. Please help improve it in the issues
here.
=================================================================
==28321==ERROR: AddressSanitizer: heap-use-after-free on address 0x602000000010 at pc 0x562ab3e6557f bp 0x7ffc8090cc80 sp 0x7ffc8090cc70
READ of size 4 at 0x602000000010 thread T0
#0 0x562ab3e6557e in case4() (/out/package/dlist_mem+0x1557e)
#1 0x562ab3e63071 in main (/out/package/dlist_mem+0x13071)
#2 0x7fe943223b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#3 0x562ab3e63619 in _start (/out/package/dlist_mem+0x13619)
0x602000000010 is located 0 bytes inside of 4-byte region [0x602000000010,0x602000000014)
freed by thread T0 here:
#0 0x7fe9449969c8 in operator delete(void*, unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe19c8)
#1 0x562ab3e653c1 in case4() (/out/package/dlist_mem+0x153c1)
#2 0x60300000006f (<unknown module>)
previously allocated by thread T0 here:
#0 0x7fe944995448 in operator new(unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe0448)
#1 0x562ab3e6505
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.