From 605137aae612a2b5bde0620eda7b976af7ba2112 Mon Sep 17 00:00:00 2001
From: drh <>
Date: Fri, 11 Mar 2022 14:20:06 +0000
Subject: [PATCH] Fix a harmless compiler warning and restore performance in
 the sqlite3BtreeIndexMoveto() last-page optimization.

FossilOrigin-Name: 8b032293b384c3728c27b0658ee634c028c0d231d067de8b747d2e9e4ae704a7
---
 manifest      | 14 +++++++-------
 manifest.uuid |  2 +-
 src/btree.c   |  7 ++++---
 3 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/manifest b/manifest
index ecda399fcd..083d0d7bc0 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\sa\scase\sin\sfts5\swhere\sa\scorrupt\sdatabase\scould\scause\sa\scrash.
-D 2022-03-11T12:02:18.299
+C Fix\sa\sharmless\scompiler\swarning\sand\srestore\sperformance\sin\sthe\nsqlite3BtreeIndexMoveto()\slast-page\soptimization.
+D 2022-03-11T14:20:06.914
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -492,7 +492,7 @@ F src/auth.c f4fa91b6a90bbc8e0d0f738aa284551739c9543a367071f55574681e0f24f8cf
 F src/backup.c a2891172438e385fdbe97c11c9745676bec54f518d4447090af97189fd8e52d7
 F src/bitvec.c 7c849aac407230278445cb069bebc5f89bf2ddd87c5ed9459b070a9175707b3d
 F src/btmutex.c 8acc2f464ee76324bf13310df5692a262b801808984c1b79defb2503bbafadb6
-F src/btree.c 961ae88f10541fa0cb6fb0cffedfbdfb7183041b66d99c57544b7e9fc1214f8f
+F src/btree.c ddc3cec12a39675e10066c008aac7925b26c74f78c46b849b2416ca45701a313
 F src/btree.h 74d64b8f28cfa4a894d14d4ed64fa432cd697b98b61708d4351482ae15913e22
 F src/btreeInt.h 8ce1332edd89dfd2461d561ac10a0ab5601c8e06200cb5230596c3caaf54482e
 F src/build.c a0cc68fe8172c0a31b54576f9c6c0fe6f7c82b1b5e1387afdd6a5a13132bc131
@@ -1944,8 +1944,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 531e6ad0389c6c820bb8c64db5049fb6b0bffd30bd394fd8ee7412959b1752e2
-R b26ba835a81a27a8d4e88d89ca2bec5f
-U dan
-Z 72823c7752498ddb91913ba2db429eed
+P 5e95df261cce275adb5b2226e9584f4c389bb0d53c3b4feafd5a14be8d02ce63
+R 5ab1a745e3278dea812b08524563aa85
+U drh
+Z e7eed47d8c0d1a5c83108e7c1f88ee07
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index ea9149f6cc..a825781807 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-5e95df261cce275adb5b2226e9584f4c389bb0d53c3b4feafd5a14be8d02ce63
\ No newline at end of file
+8b032293b384c3728c27b0658ee634c028c0d231d067de8b747d2e9e4ae704a7
\ No newline at end of file
diff --git a/src/btree.c b/src/btree.c
index a41778761a..2e87707072 100644
--- a/src/btree.c
+++ b/src/btree.c
@@ -5830,18 +5830,19 @@ int sqlite3BtreeIndexMoveto(
     int c;
     if( pCur->ix==pCur->pPage->nCell-1
      && (c = indexCellCompare(pCur, pCur->ix, pIdxKey, xRecordCompare))<=0
+     && pIdxKey->errCode==SQLITE_OK
     ){
       *pRes = c;
-      if( pIdxKey->errCode ) return SQLITE_CORRUPT_BKPT;
       return SQLITE_OK;  /* Cursor already pointing at the correct spot */
     }
     if( pCur->iPage>0 
-     && (c = indexCellCompare(pCur, 0, pIdxKey, xRecordCompare))<=0
+     && indexCellCompare(pCur, 0, pIdxKey, xRecordCompare)<=0
+     && pIdxKey->errCode==SQLITE_OK
     ){
       pCur->curFlags &= ~BTCF_ValidOvfl;
-      if( pIdxKey->errCode ){ *pRes = 0; return SQLITE_CORRUPT_BKPT; }
       goto bypass_moveto_root;  /* Start search on the current page */
     }
+    pIdxKey->errCode = SQLITE_OK;
   }
 
   rc = moveToRoot(pCur);