Record Case Detail

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

 pwd: /out/package
ppid: 4441
   1: WRITELN > abc | | grep 123
   2: WRITELN exit
exit: 1

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.

mumsh $ main.c:397:21: runtime error: index -1 out of bounds for type 'char [1024]'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior main.c:397:21 in 
=================================================================
==4442==ERROR: AddressSanitizer: stack-buffer-underflow on address 0x7ffc1abe0c9f at pc 0x00000051e419 bp 0x7ffc1abe0c70 sp 0x7ffc1abe0c68
READ of size 1 at 0x7ffc1abe0c9f thread T0
    #0 0x51e418  (/out/package/mumsh_memory_check+0x51e418)
    #1 0x7fd7c550db96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #2 0x41ccf9  (/out/package/mumsh_memory_check+0x41ccf9)

Address 0x7ffc1abe0c9f is located in stack of thread T0 at offset 31 in frame
    #0 0x515d6f  (/out/package/mumsh_memory_check+0x515d6f)

  This frame has 10 object(s):
    [32, 1056) 'line' <== Memory access at offset 31 underflows this variable
    [1184, 1192) 'fd_pipe'
    [1216, 1224) 'fd_pwd'
    [1248, 2272) 'pre_dir'
    [2400, 3424) 'remain'
    [3552, 4576) 'temp'
    [4704, 5728) 'buf'
    [5856, 5860) 'wstatus'

mumsh $ error: missing program
mumsh $ exit

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