Record Case Detail

This function is in beta test. Please help improve it in the issues here.

5 double
0 append PXzsNFbe 0.1828935773006043
/in/dlist.c:125:14: runtime error: member access within null pointer of type 'node_t' (aka 'struct _node_')
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /in/dlist.c:125:14 in 
AddressSanitizer:DEADLYSIGNAL
=================================================================
==426==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000010 (pc 0x000000516abc bp 0x7ffc0fc37e10 sp 0x7ffc0fc37d20 T0)
==426==The signal is caused by a WRITE memory access.
==426==Hint: address points to the zero page.
    #0 0x516abb  (/out/package/main+0x516abb)
    #1 0x5198b3  (/out/package/main+0x5198b3)
    #2 0x5152d7  (/out/package/main+0x5152d7)
    #3 0x7fb4f5885b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #4 0x41ca79  (/out/package/main+0x41ca79)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/out/package/main+0x516abb) 
==426==ABORTING

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.

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PXzsNFbe=0.182894
hSwQR7oaVKLPH=0.369134
tj3GVx=0.896311
kIBAKl9O=0.887944

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JOJ Answer