From: drh <drh@noemail.net>
Date: Tue, 2 Jun 2009 16:06:03 +0000 (+0000)
Subject: Tweaks to vdbe.c to further reduce stack space requirements. (CVS 6706)
X-Git-Tag: version-3.6.15~54
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c54a617e1ff59a717960a876977b7c56f2276715;p=thirdparty%2Fsqlite.git

Tweaks to vdbe.c to further reduce stack space requirements. (CVS 6706)

FossilOrigin-Name: 6f2aab3f7be12710b703eda22b1d5c0e8f85f814
---

diff --git a/manifest b/manifest
index 3db5d28f63..1107541275 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Add\sa\stest\scase\sfor\sticket\s#3893\sand\sticket\s#3894.\s(CVS\s6705)
-D 2009-06-02T15:47:38
+C Tweaks\sto\svdbe.c\sto\sfurther\sreduce\sstack\sspace\srequirements.\s(CVS\s6706)
+D 2009-06-02T16:06:04
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in 8b8fb7823264331210cddf103831816c286ba446
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -203,7 +203,7 @@ F src/update.c 6ae6c26adff8dc34532d578f66e6cfde04b5d177
 F src/utf.c 9541d28f40441812c0b40f00334372a0542c00ff
 F src/util.c a9719d309f6c65b3b79fa3ca8512fa8e3947a391
 F src/vacuum.c 981686c910b2ff9fe3db814e01da31cf9dbd48c7
-F src/vdbe.c 2f2c4b5a1b92cdbae31f5c5d5a380c697fa3dcc4
+F src/vdbe.c 6bb5bc95316784d67deaa84e2a158d28595abeee
 F src/vdbe.h 35a648bc3279a120da24f34d9a25213ec15daf8a
 F src/vdbeInt.h 43183a2a18654fa570219ab65e53a608057c48ae
 F src/vdbeapi.c 86aa27a5f3493aaffb8ac051782aa3b22670d7ed
@@ -731,8 +731,8 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
 F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
-F tool/vdbe-compress.tcl 383f4be3ceb8cec24f31f27480232fbb866fd83a
-P 7f43391831b03e53d967acee6ae02089740aaedb
-R b31694ba92374d717dd008daf81bde48
+F tool/vdbe-compress.tcl 672f81d693a03f80f5ae60bfefacd8a349e76746
+P 2472f6db95cd537a908bdbbbbc41bad2bd987b2f
+R 57397b8b65ede5893d2dad509980c211
 U drh
-Z 478edb6360b0cd2be154f1dd2a044a7c
+Z 17489243ec8afd4b7332979c8573eb17
diff --git a/manifest.uuid b/manifest.uuid
index 02ff77fecb..ed32c6c967 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-2472f6db95cd537a908bdbbbbc41bad2bd987b2f
\ No newline at end of file
+6f2aab3f7be12710b703eda22b1d5c0e8f85f814
\ No newline at end of file
diff --git a/src/vdbe.c b/src/vdbe.c
index 326efc91b5..e9321eea3f 100644
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -43,7 +43,7 @@
 ** in this file for details.  If in doubt, do not deviate from existing
 ** commenting and indentation practices when changing or adding code.
 **
-** $Id: vdbe.c,v 1.844 2009/06/02 15:21:42 drh Exp $
+** $Id: vdbe.c,v 1.845 2009/06/02 16:06:04 drh Exp $
 */
 #include "sqliteInt.h"
 #include "vdbeInt.h"
@@ -1940,7 +1940,9 @@ case OP_IfNot: {            /* jump, in1 */
 ** reg(P1+2), ..., reg(P1+P3-1).
 */
 case OP_IsNull: {            /* same as TK_ISNULL, jump, in1 */
-  int n = pOp->p3;
+  int n;
+
+  n = pOp->p3;
   assert( pOp->p3==0 || pOp->p1>0 );
   do{
     if( (pIn1->flags & MEM_Null)!=0 ){
@@ -2398,7 +2400,9 @@ case OP_MakeRecord: {
 #ifndef SQLITE_OMIT_BTREECOUNT
 case OP_Count: {         /* out2-prerelease */
   i64 nEntry;
-  BtCursor *pCrsr = p->apCsr[pOp->p1]->pCursor;
+  BtCursor *pCrsr;
+
+  pCrsr = p->apCsr[pOp->p1]->pCursor;
   if( pCrsr ){
     rc = sqlite3BtreeCount(pCrsr, &nEntry);
   }else{
@@ -3100,7 +3104,8 @@ case OP_OpenPseudo: {
 ** currently open, this instruction is a no-op.
 */
 case OP_Close: {
-  int i = pOp->p1;
+  int i;
+  i = pOp->p1;
   assert( i>=0 && i<p->nCursor );
   sqlite3VdbeFreeCursor(p, p->apCsr[i]);
   p->apCsr[i] = 0;
@@ -4882,7 +4887,8 @@ case OP_IfZero: {        /* jump, in1 */
 case OP_AggStep: {
   int n;
   int i;
-  Mem *pMem, *pRec;
+  Mem *pMem;
+  Mem *pRec;
   sqlite3_context ctx;
   sqlite3_value **apVal;
 
@@ -5278,9 +5284,10 @@ case OP_VColumn: {
 case OP_VNext: {   /* jump */
   sqlite3_vtab *pVtab;
   const sqlite3_module *pModule;
-  int res = 0;
+  int res;
   VdbeCursor *pCur;
 
+  res = 0;
   pCur = p->apCsr[pOp->p1];
   assert( pCur->pVtabCursor );
   if( pCur->nullRow ){
diff --git a/tool/vdbe-compress.tcl b/tool/vdbe-compress.tcl
index 81f2da06d5..6aa902df70 100644
--- a/tool/vdbe-compress.tcl
+++ b/tool/vdbe-compress.tcl
@@ -64,7 +64,7 @@ while {![eof stdin]} {
     set vlist {}
     while {![eof stdin]} {
       set line [gets stdin]
-      if {[regexp {^ +(const )?\w+ \*?(\w+)(\[.*\])?;} $line \
+      if {[regexp {^ +(const )?\w+ \**(\w+)(\[.*\])?;} $line \
            all constKeyword vname notused1]} {
         if {!$seenDecl} {
           set sname {}