Fix uninitialized value in segno calculation
authorAlvaro Herrera <alvherre@alvh.no-ip.org>
Mon, 13 Jul 2020 17:49:50 +0000 (13:49 -0400)
committerAlvaro Herrera <alvherre@alvh.no-ip.org>
Mon, 13 Jul 2020 17:49:50 +0000 (13:49 -0400)
commit794e8e32bb5ae1b38a90cbae2a88895633797599
tree786a3033c5ce0df89a139467bb35a2f0af4b9b17
parent8e6f134a9a8db52cbd2818ce8a60b9e5cdadfc8f
Fix uninitialized value in segno calculation

Remove previous hack in KeepLogSeg that added a case to deal with a
(badly represented) invalid segment number.  This was added for the sake
of GetWALAvailability.  But it's not needed if in that function we
initialize the segment number to be retreated to the currently being
written segment, so do that instead.

Per valgrind-running buildfarm member skink, and some sparc64 animals.

Discussion: https://postgr.es/m/1724648.1594230917@sss.pgh.pa.us
src/backend/access/transam/xlog.c