Record Case Detail

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

 pwd: /out/package
ppid: 99106
   1: WRITELN echo 123 > 1.txt
   2: WRITELN echo abc > > > >
   3: WRITELN echo abc > < 1.txt
   4: WRITELN echo abc > | grep abc
   5: 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.

AddressSanitizer:DEADLYSIGNAL
=================================================================
==99107==ERROR: AddressSanitizer: SEGV on unknown address 0x0000000000c0 (pc 0x7f37bc2c645c bp 0x7ffe69db78f0 sp 0x7ffe69db7380 T0)
==99107==The signal is caused by a READ memory access.
==99107==Hint: address points to the zero page.
    #0 0x7f37bc2c645b  (/lib/x86_64-linux-gnu/libc.so.6+0x5b45b)
    #1 0x449646  (/out/package/mumsh_memory_check+0x449646)
    #2 0x449756  (/out/package/mumsh_memory_check+0x449756)
    #3 0x51993a  (/out/package/mumsh_memory_check+0x51993a)
    #4 0x5156a5  (/out/package/mumsh_memory_check+0x5156a5)
    #5 0x7f37bc28cb96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #6 0x41cdd9  (/out/package/mumsh_memory_check+0x41cdd9)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/lib/x86_64-linux-gnu/libc.so.6+0x5b45b) 
==99107==ABORTING

mumsh $ mumsh $ syntax error near unexpected token `>'
mumsh $ syntax error near unexpected token `<'
mumsh $ syntax error near unexpected token `|'
mumsh $ exit

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JOJ Answer