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gcc/ * gcov-io.cc (GCOV_MODE_STDIN): Define. (gcov_position): For gcov-tool, return calculated position if file is stdin. (gcov_open): For gcov-tool, use stdin if filename is NULL. (gcov_close): For gcov-tool, do not close stdin. (gcov_read_bytes): For gcov-tool, update position if file is stdin. (gcov_sync): For gcov-tool, discard input if file is stdin.
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