Your bug report

#8961: stdbuf has no effect on some programs

which was filed against the coreutils package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 8961@debbugs.gnu.org.

-- 
8961: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8961
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