Notes
This function is in beta test. Please help improve it in the issues
here.
=================================================================
==1346==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x7ffc403d45cc in thread T0
#0 0x516c48 (/out/package/dlist_mem+0x516c48)
#1 0x5214d8 (/out/package/dlist_mem+0x5214d8)
#2 0x51d115 (/out/package/dlist_mem+0x51d115)
#3 0x520c4f (/out/package/dlist_mem+0x520c4f)
#4 0x7f3a3e895b96 (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#5 0x41da69 (/out/package/dlist_mem+0x41da69)
Address 0x7ffc403d45cc is located in stack of thread T0 at offset 268 in frame
#0 0x51ccbf (/out/package/dlist_mem+0x51ccbf)
This frame has 2 object(s):
[32, 48) 'list1' (line 161)
[64, 80) 'list2' (line 166) <== Memory access at offset 268 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+0x516c48)
==1346==ABORT
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.