From 5f1d536b537429454262a5907ec734444e32f075 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Tue, 4 Mar 2014 13:18:23 +0000
Subject: [PATCH] Improve clarity of presentation in the
 sqlite3VdbeMemFromBtree() routine.

FossilOrigin-Name: 9830c343bc954b828f6ca752f8ae63e2c0a980c1
---
 manifest      | 14 +++++++-------
 manifest.uuid |  2 +-
 src/vdbemem.c | 15 ++++++++-------
 3 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/manifest b/manifest
index 9e2889a80a..c0ec8eeea1 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\scomment\sin\stest.
-D 2014-03-04T12:07:24.678
+C Improve\sclarity\sof\spresentation\sin\sthe\ssqlite3VdbeMemFromBtree()\sroutine.
+D 2014-03-04T13:18:23.018
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 2ef13430cd359f7b361bb863504e227b25cc7f81
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -283,7 +283,7 @@ F src/vdbeInt.h 9ccca0bc7646c918d065943e44bead4bf5de213d
 F src/vdbeapi.c 5bc41aaea448a7fc250902c418f1795859be3820
 F src/vdbeaux.c 636a7e2eaaa48c3e3585b28b9b1673df78fc0fad
 F src/vdbeblob.c d939997de046b8fcc607cfee4248f3d33dbcca50
-F src/vdbemem.c 2d7918e4c80546d943414668b1485b2581f58a28
+F src/vdbemem.c 10b250f09a3843ee2bcabcadf50ca21fc3ff1f87
 F src/vdbesort.c 46801acb342e5e4c07ba1777fe58880c143abb59
 F src/vdbetrace.c 6f52bc0c51e144b7efdcfb2a8f771167a8816767
 F src/vtab.c 21b932841e51ebd7d075e2d0ad1415dce8d2d5fd
@@ -1155,7 +1155,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh d1a6de74685f360ab718efda6265994b99bbea01
 F tool/win/sqlite.vsix 030f3eeaf2cb811a3692ab9c14d021a75ce41fff
-P 3cbb9b1b4f8c5c2735799e84dc80614586222cd2
-R 6bc642348ddf6f33974f36f3d8fd1bd7
-U mistachkin
-Z 8b1594ffbd0318ed08d8afbfa1da0977
+P 1e57f67b20a1c01ede36d684be628e9270bf109a
+R a19a15248ea3d7c53bb59593fa01c33d
+U drh
+Z e6c94fb8a2515aaa56cdd644b73247d7
diff --git a/manifest.uuid b/manifest.uuid
index 414d8215f6..0ddf6b66df 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-1e57f67b20a1c01ede36d684be628e9270bf109a
\ No newline at end of file
+9830c343bc954b828f6ca752f8ae63e2c0a980c1
\ No newline at end of file
diff --git a/src/vdbemem.c b/src/vdbemem.c
index d782696149..378de2deb7 100644
--- a/src/vdbemem.c
+++ b/src/vdbemem.c
@@ -827,22 +827,23 @@ int sqlite3VdbeMemFromBtree(
     sqlite3VdbeMemRelease(pMem);
     pMem->z = &zData[offset];
     pMem->flags = MEM_Blob|MEM_Ephem;
+    pMem->n = (int)amt;
   }else if( SQLITE_OK==(rc = sqlite3VdbeMemGrow(pMem, amt+2, 0)) ){
-    pMem->flags = MEM_Blob|MEM_Term;
-    pMem->enc = 0;
-    pMem->memType = MEM_Blob;
     if( key ){
       rc = sqlite3BtreeKey(pCur, offset, amt, pMem->z);
     }else{
       rc = sqlite3BtreeData(pCur, offset, amt, pMem->z);
     }
-    pMem->z[amt] = 0;
-    pMem->z[amt+1] = 0;
-    if( rc!=SQLITE_OK ){
+    if( rc==SQLITE_OK ){
+      pMem->z[amt] = 0;
+      pMem->z[amt+1] = 0;
+      pMem->flags = MEM_Blob|MEM_Term;
+      pMem->memType = MEM_Blob;
+      pMem->n = (int)amt;
+    }else{
       sqlite3VdbeMemRelease(pMem);
     }
   }
-  pMem->n = (int)amt;
 
   return rc;
 }
-- 
2.47.2