From 009862ab7eee394061eeaf1aa187fa339ca50be4 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Tue, 8 Oct 2019 17:02:52 +0200
Subject: [PATCH] Geo: output 10 chars of geohash, not 11.

This does not limit the actual precision, because the last digit bits were
garbage, and the shift value became even negative in the last iteration.
---
 src/geo.c          | 8 ++++----
 tests/unit/geo.tcl | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/geo.c b/src/geo.c
index f47f4ee22..049335a4f 100644
--- a/src/geo.c
+++ b/src/geo.c
@@ -734,14 +734,14 @@ void geohashCommand(client *c) {
             r[1].max = 90;
             geohashEncode(&r[0],&r[1],xy[0],xy[1],26,&hash);
 
-            char buf[12];
+            char buf[11];
             int i;
-            for (i = 0; i < 11; i++) {
+            for (i = 0; i < 10; i++) {
                 int idx = (hash.bits >> (52-((i+1)*5))) & 0x1f;
                 buf[i] = geoalphabet[idx];
             }
-            buf[11] = '\0';
-            addReplyBulkCBuffer(c,buf,11);
+            buf[10] = '\0';
+            addReplyBulkCBuffer(c,buf,10);
         }
     }
 }
diff --git a/tests/unit/geo.tcl b/tests/unit/geo.tcl
index 49e421ee9..76b9bda38 100644
--- a/tests/unit/geo.tcl
+++ b/tests/unit/geo.tcl
@@ -129,7 +129,7 @@ start_server {tags {"geo"}} {
         r del points
         r geoadd points -5.6 42.6 test
         lindex [r geohash points test] 0
-    } {ezs42e44yx0}
+    } {ezs42e44yx}
 
     test {GEOPOS simple} {
         r del points