Record Case Detail

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

 pwd: /out/package
ppid: 42520
   1: WRITELN echo 123 > 1.txt
   2: WRITELN head < 1.txt
   3: WRITELN diff -y - 1.txt < 1.txt
   4: WRITELN ls
   5: WRITELN exit

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

However, the main problem you meet now is Time Exceeded.

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

mumsh $ /in/p1_2.c:175:27: runtime error: null pointer passed as argument 1, which is declared to never be null
/usr/include/string.h:137:33: note: nonnull attribute specified here
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /in/p1_2.c:175:27 in 
AddressSanitizer:DEADLYSIGNAL
=================================================================
==42522==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x0000004b24eb bp 0x7ffee2a79db0 sp 0x7ffee2a79520 T0)
==42522==The signal is caused by a READ memory access.
==42522==Hint: address points to the zero page.
    #0 0x4b24ea  (/out/package/mumsh_memory_check+0x4b24ea)
    #1 0x517d47  (/out/package/mumsh_memory_check+0x517d47)
    #2 0x7f294a309b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #3 0x41d019  (/out/package/mumsh_memory_check+0x41d019)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/out/package/mumsh_memory_check+0x4b24ea) 
==42522==ABORTING
/in/p1_2.c:207:27: runtime error: null point

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

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JOJ Answer