Fix a problem with SQLITE_MAX_SQL_LENGTH introduced by check-in (4636).

Ticket #2851 (CVS 4639)

FossilOrigin-Name: cdd866f59797b81b573c68d5c625f9bd9f0f6fde

manifest

@@ -1,5 +1,5 @@
-C In\sthe\sCLI,\squote\sstrings\sthat\scontain\sthe\sseparator\scharacter.\nTicket\s#2850.\s(CVS\s4638)
-D 2007-12-18T15:41:44
+C Fix\sa\sproblem\swith\sSQLITE_MAX_SQL_LENGTH\sintroduced\sby\scheck-in\s(4636).\nTicket\s#2851\s(CVS\s4639)
+D 2007-12-18T17:50:33
 F Makefile.arm-wince-mingw32ce-gcc ac5f7b2cef0cd850d6f755ba6ee4ab961b1fadf7
 F Makefile.in 30789bf70614bad659351660d76b8e533f3340e9
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -128,7 +128,7 @@ F src/pager.c 0cb6ccea4b9615627d61d7c4417cedc45776d429
 F src/pager.h f504f7ae84060fee0416a853e368d3d113c3d6fa
 F src/parse.y a780b33ef45dd7b3272319cf91e609d6f109a31c
 F src/pragma.c 2a5f6439994ec1f7ff7f235d4ac9d37c6cc381ed
-F src/prepare.c 75418527ca84305284ec98974ee9e285088aa7bf
+F src/prepare.c ff6c3e4cc87c07b27be309a2e38518d86cbddaa2
 F src/printf.c eb27822ba2eec669161409ca31279a24c26ac910
 F src/random.c 4a22746501bf36b0a088c66e38dde5daba6a35da
 F src/select.c 5a137027415a74e950603baddbbcbe9d3f8bc5a5
@@ -600,7 +600,7 @@ F www/tclsqlite.tcl 8be95ee6dba05eabcd27a9d91331c803f2ce2130
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
-P 15675dc518dbcf2ce2daa0bbcaf8daf3329ead75
-R 7df473269d55337eaf1c2164ee79279e
+P 493a17c46a66d2febc11205c052bf949a3f22bd8
+R 1a3744f4614d5f0fcbc4196d34717f55
 U drh
-Z 17ffea682be2dd31aa5472716e6a62a2
+Z 04e343312b9266e8d0bb12ee1ead5c56

manifest.uuid

@@ -1 +1 @@
-493a17c46a66d2febc11205c052bf949a3f22bd8
+cdd866f59797b81b573c68d5c625f9bd9f0f6fde

src/prepare.c

@@ -13,7 +13,7 @@
 ** interface, and routines that contribute to loading the database schema
 ** from disk.
 **
-** $Id: prepare.c,v 1.66 2007/12/13 21:54:11 drh Exp $
+** $Id: prepare.c,v 1.67 2007/12/18 17:50:33 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -530,7 +530,9 @@ int sqlite3Prepare(
   sParse.db = db;
   if( nBytes>=0 && zSql[nBytes]!=0 ){
     char *zSqlCopy;
-    if( nBytes>SQLITE_MAX_SQL_LENGTH ){
+    if( SQLITE_MAX_SQL_LENGTH>0 && nBytes>SQLITE_MAX_SQL_LENGTH ){
+      sqlite3Error(db, SQLITE_TOOBIG, "statement too long");
+      sqlite3SafetyOff(db);
       return SQLITE_TOOBIG;
     }
     zSqlCopy = sqlite3DbStrNDup(db, zSql, nBytes);
@@ -601,7 +603,6 @@ int sqlite3Prepare(
   }
 
   rc = sqlite3ApiExit(db, rc);
-  /* sqlite3ReleaseThreadData(); */
   assert( (rc&db->errMask)==rc );
   return rc;
 }