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Flush Libc Buffer

Question Text​

Which of the following is a method of flushing libc's internal buffer?

Question Answers​

  • print a \0 character
  • print a \n character

  • print a space character

  • print a \t character

Feedback​

Newlines (\n) force printf() to dump the internal buffer associated with the stdout FILE struct. If you place a \n character within one of the strings in support/buffering/printf_buffering.c, a write() syscall will be made right after it.