Notes
This function is in beta test. Please help improve it in the issues
here.
=================================================================
==29711==ERROR: AddressSanitizer: heap-use-after-free on address 0x602000000010 at pc 0x5573d864857f bp 0x7ffcbf5e0b20 sp 0x7ffcbf5e0b10
READ of size 4 at 0x602000000010 thread T0
#0 0x5573d864857e in case4() (/out/package/dlist_mem+0x1557e)
#1 0x5573d8646071 in main (/out/package/dlist_mem+0x13071)
#2 0x7f59452ffb96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#3 0x5573d8646619 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 0x7f5946a729c8 in operator delete(void*, unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe19c8)
#1 0x5573d86483c1 in case4() (/out/package/dlist_mem+0x153c1)
#2 0x60300000006f (<unknown module>)
previously allocated by thread T0 here:
#0 0x7f5946a71448 in operator new(unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe0448)
#1 0x5573d864805
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.