Record Case Detail

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

 pwd: /out/package
ppid: 5093
   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 $ /in/p1.c:57:8: runtime error: index -2 out of bounds for type 'char [1024]'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /in/p1.c:57:8 in 
=================================================================
==5094==ERROR: AddressSanitizer: stack-buffer-underflow on address 0x7ffc9b68b21e at pc 0x00000051670c bp 0x7ffc9b68b1f0 sp 0x7ffc9b68b1e8
READ of size 1 at 0x7ffc9b68b21e thread T0
    #0 0x51670b  (/out/package/mumsh_memory_check+0x51670b)
    #1 0x51faba  (/out/package/mumsh_memory_check+0x51faba)
    #2 0x7f8919ae3b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #3 0x41d089  (/out/package/mumsh_memory_check+0x41d089)

Address 0x7ffc9b68b21e is located in stack of thread T0 at offset 30 in frame
    #0 0x51545f  (/out/package/mumsh_memory_check+0x51545f)

  This frame has 1 object(s):
    [32, 1056) 'cmdstr' <== Memory access at offset 30 underflows this variable
HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext
      (longjmp an

mumsh $ error: missing program
mumsh $ exit

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Your Answer

JOJ Answer