Remove an unreachable branch in the direct blob I/O logic of btree.c.

FossilOrigin-Name: f97d7274f48e3bb98ed17eae11abb55064134874

manifest

@@ -1,5 +1,5 @@
-C Fix\sa\sbug\sin\sthe\sdetection\sof\siOS\swhen\ssetting\sthe\sdefault\smmap_limit.
-D 2013-04-03T13:38:46.133
+C Remove\san\sunreachable\sbranch\sin\sthe\sdirect\sblob\sI/O\slogic\sof\sbtree.c.
+D 2013-04-03T20:04:04.697
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in df3e48659d80e1b7765785d8d66c86b320f72cc7
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -121,7 +121,7 @@ F src/auth.c 523da7fb4979469955d822ff9298352d6b31de34
 F src/backup.c b266767351ae2d847716c56fcb2a1fea7c761c03
 F src/bitvec.c 19a4ba637bd85f8f63fc8c9bae5ade9fb05ec1cb
 F src/btmutex.c 976f45a12e37293e32cae0281b15a21d48a8aaa7
-F src/btree.c fd492d65eee0eb35f4000ddf478215c99dca6838
+F src/btree.c 4e3d07b3781a41e6ba9ea13ca97d7baab0a252a3
 F src/btree.h d9490cd37aaeb530a41b07f06e1262950b1be916
 F src/btreeInt.h eecc84f02375b2bb7a44abbcbbe3747dde73edb2
 F src/build.c 083da8466fd7e481cb8bd5264398f537507f6176
@@ -1042,7 +1042,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
 F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
-P 2d9f1327fe79e40435ce1e2594d7cd9a5aea0ef2
-R e2d5c255f4ba7e0fb00c083dac088003
+P ac1432b3a8e968be4cbc138b4a35f34187c0c36f
+R d830cc1d5cf92f6d3df5e32e65cb6d76
 U drh
-Z 519f2edad4b962613f9e09a344e900e8
+Z d56f9eb968ec676dc0a522c6c207a8e6

manifest.uuid

@@ -1 +1 @@
-ac1432b3a8e968be4cbc138b4a35f34187c0c36f
+f97d7274f48e3bb98ed17eae11abb55064134874

src/btree.c

@@ -8380,11 +8380,13 @@ int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void *z){
   /* Save the positions of all other cursors open on this table. This is
   ** required in case any of them are holding references to an xFetch
   ** version of the b-tree page modified by the accessPayload call below.
+  **
+  ** Note that pCsr must be open on a BTREE_INTKEY table and saveCursorPosition()
+  ** and hence saveAllCursors() cannot fail on a BTREE_INTKEY table, hence
+  ** saveAllCursors can only return SQLITE_OK.
   */
-  rc = saveAllCursors(pCsr->pBt, pCsr->pgnoRoot, pCsr);
-  if( rc!=SQLITE_OK ){
-    return SQLITE_OK;
-  }
+  VVA_ONLY(rc =) saveAllCursors(pCsr->pBt, pCsr->pgnoRoot, pCsr);
+  assert( rc==SQLITE_OK );
 
   /* Check some assumptions: 
   **   (a) the cursor is open for writing,