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D.9.6 Console I/O

By default and if not explicitly closed by the target system, the file descriptors 0, 1 and 2 are connected to the No value for GDBN console. Output on the No value for GDBN console is handled as any other file output operation (write(1, …) or write(2, …)). Console input is handled by No value for GDBN so that after the target read request from file descriptor 0 all following typing is buffered until either one of the following conditions is met:

If the user has typed more characters than fit in the buffer given to the read call, the trailing characters are buffered in No value for GDBN until either another read(0, …) is requested by the target, or debugging is stopped at the user's request.


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