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76dd015e85
Duplicate the comment from astreamer_plain_writer_new instead of just referring to it. Add a further note to mention that there are dangers if anything else is written to the same FILE. Also add a comment where we dup() the filehandle, referring to the existing comment in astreamer_gzip_writer_finalize(), because the dup() looks wrong on first glance without that comment to clarify. Per concerns expressed by Tom Lane on pgsql-security, and using some wording suggested by him. Discussion: http://postgr.es/m/CA+TgmoYTFAD0YTh4HC1Nuhn0YEyoQi0_CENFgVzAY_YReiSksQ@mail.gmail.com