From 569c6676a6ddb0ff73821d7693b5e18ddef809b9 Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <hans@eds.org>
Date: Thu, 16 Oct 2014 22:51:35 -0400
Subject: Imported Upstream version 3.2.0

---
 src/prepare.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

(limited to 'src/prepare.c')

diff --git a/src/prepare.c b/src/prepare.c
index d78d83c..c7ba53a 100644
--- a/src/prepare.c
+++ b/src/prepare.c
@@ -524,6 +524,17 @@ int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){
   return i;
 }
 
+/*
+** Free all memory allocations in the pParse object
+*/
+void sqlite3ParserReset(Parse *pParse){
+  if( pParse ){
+    sqlite3 *db = pParse->db;
+    sqlite3DbFree(db, pParse->aLabel);
+    sqlite3ExprListDelete(db, pParse->pConstExpr);
+  }
+}
+
 /*
 ** Compile the UTF-8 encoded SQL statement zSql into a statement handle.
 */
@@ -592,7 +603,7 @@ static int sqlite3Prepare(
   sqlite3VtabUnlockList(db);
 
   pParse->db = db;
-  pParse->nQueryLoop = (double)1;
+  pParse->nQueryLoop = 0;  /* Logarithmic, so 0 really means 1 */
   if( nBytes>=0 && (nBytes==0 || zSql[nBytes-1]!=0) ){
     char *zSqlCopy;
     int mxLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH];
@@ -614,7 +625,7 @@ static int sqlite3Prepare(
   }else{
     sqlite3RunParser(pParse, zSql, &zErrMsg);
   }
-  assert( 1==(int)pParse->nQueryLoop );
+  assert( 0==pParse->nQueryLoop );
 
   if( db->mallocFailed ){
     pParse->rc = SQLITE_NOMEM;
@@ -681,6 +692,7 @@ static int sqlite3Prepare(
 
 end_prepare:
 
+  sqlite3ParserReset(pParse);
   sqlite3StackFree(db, pParse);
   rc = sqlite3ApiExit(db, rc);
   assert( (rc&db->errMask)==rc );
@@ -810,6 +822,12 @@ static int sqlite3Prepare16(
   if( !sqlite3SafetyCheckOk(db) ){
     return SQLITE_MISUSE_BKPT;
   }
+  if( nBytes>=0 ){
+    int sz;
+    const char *z = (const char*)zSql;
+    for(sz=0; sz<nBytes && (z[sz]!=0 || z[sz+1]!=0); sz += 2){}
+    nBytes = sz;
+  }
   sqlite3_mutex_enter(db->mutex);
   zSql8 = sqlite3Utf16to8(db, zSql, nBytes, SQLITE_UTF16NATIVE);
   if( zSql8 ){
-- 
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