Notes
This function is in beta test. Please help improve it in the issues
here.
=================================================================
==57554==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x7ffd39952ab0 in thread T0
#0 0x516bf8 (/out/package/dlist_mem+0x516bf8)
#1 0x521d63 (/out/package/dlist_mem+0x521d63)
#2 0x51de7f (/out/package/dlist_mem+0x51de7f)
#3 0x520c9f (/out/package/dlist_mem+0x520c9f)
#4 0x7f8285677c86 (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
#5 0x41da19 (/out/package/dlist_mem+0x41da19)
Address 0x7ffd39952ab0 is located in stack of thread T0 at offset 240 in frame
#0 0x51d8ff (/out/package/dlist_mem+0x51d8ff)
This frame has 2 object(s):
[32, 48) 'list1' (line 204)
[64, 80) 'list2' (line 209) <== Memory access at offset 240 overflows this variable
HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: bad-free (/out/package/dlist_mem+0x516bf8)
==57554==ABO
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.