Record Case Detail

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 pwd: /out/package
ppid: 4255
   1: WRITELN echo 123
   2: WRITELN 
exit: 1

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

However, the main problem you meet now is Runtime Error. And the exit code of your program is 1, which should be 0.

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

mumsh $ =================================================================
==4256==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x619000000480 at pc 0x0000005189e9 bp 0x7ffd311fa4f0 sp 0x7ffd311fa4e8
READ of size 1 at 0x619000000480 thread T0
    #0 0x5189e8  (/out/package/mumsh_memory_check+0x5189e8)
    #1 0x7fc780f49b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #2 0x41d1a9  (/out/package/mumsh_memory_check+0x41d1a9)

0x619000000480 is located 0 bytes to the right of 1024-byte region [0x619000000080,0x619000000480)
allocated by thread T0 here:
    #0 0x4dd288  (/out/package/mumsh_memory_check+0x4dd288)
    #1 0x517ad0  (/out/package/mumsh_memory_check+0x517ad0)
    #2 0x7fc780f49b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)

SUMMARY: AddressSanitizer: heap-buffer-overflow (/out/package/mumsh_memory_check+0x5189e8) 
Shadow bytes around the buggy address:
  0x0c327fff8040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c327fff8050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c3

mumsh $ 123
mumsh $ mumsh $ exit

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