I am seeing this compiler warning in the 9.4 branch:
9.4: basebackup.c:1284:6: warning: variable 'wait_result' set but not used
[-Wunused-but-set-variable]
This is on Debian Jessie with gcc version 4.9.2. It is from this commit:
commit f6508827afe76b2c3735a9ce073620e708d60c79
Author: Magnus Hagander <mag...@hagander.net>
Date: Mon Dec 19 10:11:04 2016 +0100
Fix base backup rate limiting in presence of slow i/o
When source i/o on disk was too slow compared to the rate limiting
specified, the system could end up with a negative value for sleep
that
it never got out of, which caused rate limiting to effectively be
turned off.
Discussion:
https://postgr.es/m/CABUevEy_-e0YvL4ayoX8bH_Ja9w%2BBHoP6jUgdxZuG2nEj3uAfQ%40mail.gmail.com
Analysis by me, patch by Antonin Houska
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