Record Case Detail

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 pwd: /out/package
ppid: 28850
   1: WRITELN echo 123 > 1.txt
   2: WRITELN echo 321 > 2.txt
   3: WRITELN cat < 1.txt | cat | cat | cat | cat | cat | cat | cat | cat | cat | cat | cat | cat | cat | cat >> 2.txt
   4: WRITELN cat 1.txt
   5: WRITELN cat 2.txt
   6: WRITELN ls
   7: 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 $ mumsh $ mumsh $ =================================================================
==28851==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffd41175fa0 at pc 0x0000005173f2 bp 0x7ffd41175ea0 sp 0x7ffd41175e98
WRITE of size 8 at 0x7ffd41175fa0 thread T0
    #0 0x5173f1  (/out/package/mumsh_memory_check+0x5173f1)
    #1 0x515249  (/out/package/mumsh_memory_check+0x515249)
    #2 0x7f5db3296b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #3 0x41cd89  (/out/package/mumsh_memory_check+0x41cd89)

Address 0x7ffd41175fa0 is located in stack of thread T0 at offset 192 in frame
    #0 0x51518f  (/out/package/mumsh_memory_check+0x51518f)

  This frame has 1 object(s):
    [32, 192) 'parsedCommand' <== Memory access at offset 192 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: stack-buffer-overflow (/out/package/mumsh_memory_check+0x5173f1)

mumsh $ mumsh $ mumsh $ mumsh $ 123
mumsh $ 321
123
mumsh $ 1.txt
2.txt
driver
mumsh
mumsh_memory_check
mumsh $ exit

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