Record Case Detail

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 pwd: /out/package
ppid: 80135
   1: WRITELN > abc | | grep 123
   2: 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
/in/main.c:192:20: 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
/in/main.c:329:32: 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/main.c:192:20 in 
AddressSanitizer:DEADLYSIGNAL
=================================================================
==80138==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x0000004b213b bp 0x7ffe4cc35970 sp 0x7ffe4cc350e0 T0)
==80138==The signal is caused by a READ memory access.
==80138==Hint: address points to the zero page.
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /in/main.c:329:32 in 
AddressSanitizer:DEADLYSIGNAL
=================================================================
==80137==ERROR: AddressSanitizer: SEGV on unknown address 0x0000

mumsh $ error: missing program
mumsh $ exit

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JOJ Answer