From 30fc7f80097e9a255ce27f8c16bb9344f069876a Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Thu, 24 May 2018 22:42:27 +0000
Subject: [PATCH] New test case for reading and writing the same rtree
 concurrently.

FossilOrigin-Name: 3ba08e53d54165f5541756ad13a4c2f0b18516cb612a256e056ed1ff76c1fa83
---
 ext/rtree/rtree8.test | 24 ++++++++++++++++++++++++
 manifest              | 12 ++++++------
 manifest.uuid         |  2 +-
 3 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/ext/rtree/rtree8.test b/ext/rtree/rtree8.test
index 84191eef4c..68b68c45fd 100644
--- a/ext/rtree/rtree8.test
+++ b/ext/rtree/rtree8.test
@@ -179,5 +179,29 @@ do_test rtree8-5.4 {
 } {}
 do_rtree_integrity_test rtree8-5.5 t2
 
+# 2018-05-24
+# The following script caused an assertion fault and/or segfault
+# prior to the fix that prevents simultaneous reads and writes on
+# the same rtree virtual table.
+#
+do_test rtree8-6.1 {
+  db close
+  sqlite3 db :memory:
+  db eval {
+    PRAGMA page_size=512;
+    CREATE VIRTUAL TABLE t1 USING rtree(id,x1,x2,y1,y2);
+    WITH RECURSIVE c(x) AS (VALUES(0) UNION ALL SELECT x+1 FROM c WHERE x<49)
+    INSERT INTO t1 SELECT x, x, x+1, x, x+1 FROM c;
+  }
+  set rc [catch {
+    db eval {SELECT id FROM t1} x {
+      db eval {DELETE FROM t1 WHERE id=$x(id)}
+    }
+  } msg]
+  lappend rc $msg
+} {1 {database table is locked}}
+
+
+
 
 finish_test
diff --git a/manifest b/manifest
index 2942e21208..8df58b3b86 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Do\snot\sallow\sRTree\swrites\swhen\sa\sread\scursor\sis\sactive\son\sthe\ssame\svirtual\ntable,\sas\sthe\swrites\smight\srebalance\sand\sdisrupt\sthe\sread\scursors.\s\sReturn\nthe\snew\sSQLITE_LOCKED_VTAB\serror\scode\sif\sthis\shappens.
-D 2018-05-24T22:31:01.304
+C New\stest\scase\sfor\sreading\sand\swriting\sthe\ssame\srtree\sconcurrently.
+D 2018-05-24T22:42:27.872
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F Makefile.in bfc40f350586923e0419d2ea4b559c37ec10ee4b6e210e08c14401f8e340f0da
@@ -364,7 +364,7 @@ F ext/rtree/rtree4.test 304de65d484540111b896827e4261815e5dca4ce28eeecd58be648cd
 F ext/rtree/rtree5.test 49c9041d713d54560b315c2c7ef7207ee287eba1b20f8266968a06f2e55d3142
 F ext/rtree/rtree6.test 593e0d36510d5ac1d1fb39b018274ff17604fe8fdca8cf1f8e16559cea1477f4
 F ext/rtree/rtree7.test c8fb2e555b128dd0f0bdb520c61380014f497f8a23c40f2e820acc9f9e4fdce5
-F ext/rtree/rtree8.test f8aefd8b92f92333ae00b93eca7c197ab24522b219390a337f2a0c62a5d5f96a
+F ext/rtree/rtree8.test 924926d7c64ac59fcca0809de472d9dd73c612f54daae1cf992bdd7dac90305b
 F ext/rtree/rtree9.test c646f12c8c1c68ef015c6c043d86a0c42488e2e68ed1bb1b0771a7ca246cbabf
 F ext/rtree/rtreeA.test 20623ca337ca3bd7e008cc9fb49e44dbe97f1a80b238e10a12bb4afcd0da3776
 F ext/rtree/rtreeB.test 4cec297f8e5c588654bbf3c6ed0903f10612be8a2878055dd25faf8c71758bc9
@@ -1729,7 +1729,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P b4d80bd287ca7f3a6d182ba2435273266035b94fdf6a44047a64a4eff931c571
-R 2c56c09e62f3443ca0fffe92fcd36092
+P d4ce66610851c825cb712f985216b63e015c753fdd5521f929c67ad18bfd7664
+R 7c176c4ded679924551c349003268c49
 U drh
-Z 5e9f190f156904a95f9a8ccad0e9448c
+Z 02d192b4b4e1fc5e4499fb6cc57fb084
diff --git a/manifest.uuid b/manifest.uuid
index d73aad0973..c94163f18e 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-d4ce66610851c825cb712f985216b63e015c753fdd5521f929c67ad18bfd7664
\ No newline at end of file
+3ba08e53d54165f5541756ad13a4c2f0b18516cb612a256e056ed1ff76c1fa83
\ No newline at end of file