Record Case Detail

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

 pwd: /out/package
ppid: 79137
   1: WRITELN echo 321 >> 1.txt
   2: WRITELN cat 1.txt
   3: WRITELN ls
   4: WRITELN exit

Your answer may be identical to the JOJ answer in the first several lines.

However, you will still get Wrong Answer because the complete output may be longer and there might be errors in the future lines.

Please double check your code to solve this problem and try again.

mumsh $ mumsh $ 321
mumsh $ 1.txt
driver
mumsh
mumsh_memory_check
mumsh $ exit
=================================================================
==79138==ERROR: AddressSanitizer: attempting double-free on 0x6020000002f0 in thread T0:
    #0 0x4dc9f0  (/out/package/mumsh_memory_check+0x4dc9f0)
    #1 0x51727e  (/out/package/mumsh_memory_check+0x51727e)
    #2 0x51be06  (/out/package/mumsh_memory_check+0x51be06)
    #3 0x7ff9cfd10b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #4 0x41cd09  (/out/package/mumsh_memory_check+0x41cd09)

0x6020000002f0 is located 0 bytes inside of 3-byte region [0x6020000002f0,0x6020000002f3)
freed by thread T0 here:
    #0 0x4dc9f0  (/out/package/mumsh_memory_check+0x4dc9f0)
    #1 0x5170aa  (/out/package/mumsh_memory_check+0x5170aa)
    #2 0x51be06  (/out/package/mumsh_memory_check+0x51be06)
    #3 0x7ff9cfd10b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)

previously allocated by thread T0 here:
    #0 0x4393e0  (/out/package/mumsh_memory_check+0x4393e0)
    #1 0x516f27  (/out/

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

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JOJ Answer