Record Case Detail

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 pwd: /out/package
ppid: 14057
   1: WRITELN echo 123 | | grep 123
   2: WRITELN > abc
   3: 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 $ error: missing program
mumsh $ execute.c:41:16: runtime error: null pointer passed as argument 1, which is declared to never be null
/usr/include/unistd.h:582:14: note: nonnull attribute specified here
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior execute.c:41:16 in 
AddressSanitizer:DEADLYSIGNAL
=================================================================
==14059==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f8c1fac0510 bp 0x7ffe21346080 sp 0x7ffe21345ff0 T0)
==14059==The signal is caused by a READ memory access.
==14059==Hint: address points to the zero page.
    #0 0x7f8c1fac050f  (/lib/x86_64-linux-gnu/libc.so.6+0xe550f)
    #1 0x5152aa  (/out/package/mumsh_memory_check+0x5152aa)
    #2 0x517d34  (/out/package/mumsh_memory_check+0x517d34)
    #3 0x5190c3  (/out/package/mumsh_memory_check+0x5190c3)
    #4 0x7f8c1f9fcb96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #5 0x41cd49  (/out/package/mumsh_memory_check+0x41cd49)

AddressSanitizer can not provide add

mumsh $ error: missing program
mumsh $ error: missing program
mumsh $ exit

Notes

Stderr

Hints

Your Answer

JOJ Answer