From: Paul Ramsey <pramsey@cleverelephant.ca>
Date: Thu, 14 Sep 2017 22:57:54 +0000 (+0000)
Subject: #3731, backend crash on stats object with zero-size histogram
X-Git-Tag: 2.4.0rc2~46
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=296871a1ff7cd151d67bb6ba5019b201f2d534d3;p=postgis

#3731, backend crash on stats object with zero-size histogram


git-svn-id: http://svn.osgeo.org/postgis/trunk@15739 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/postgis/gserialized_estimate.c b/postgis/gserialized_estimate.c
index ea343495b..a63bfff67 100644
--- a/postgis/gserialized_estimate.c
+++ b/postgis/gserialized_estimate.c
@@ -1561,7 +1561,7 @@ compute_gserialized_stats_mode(VacAttrStats *stats, AnalyzeAttrFetchFunc fetchfu
 		histo_cells_new = 1;
 		for ( d = 0; d < ndims; d++ )
 		{
-			histo_size[d] = (int)pow((double)histo_cells_target, 1/(double)ndims);
+			histo_size[d] = 1 + (int)pow((double)histo_cells_target, 1/(double)ndims);
 			POSTGIS_DEBUGF(3, "   histo_size[d]: %d", histo_size[d]);
 			histo_cells_new *= histo_size[d];
 		}