diff --git a/manifest b/manifest
index 42323ae01b..f88d1a06e6 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Add\sa\stest\scase\sto\sjoin.test.\sNo\scode\schanges,\sno\sbugs\sfound.\s(CVS\s5384)
-D 2008-07-09T14:47:21
+C Test\scoverage\simprovements\son\sprintf.\s(CVS\s5385)
+D 2008-07-09T16:51:51
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in a03f7cb4f7ad50bc53a788c6c544430e81f95de4
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -138,7 +138,7 @@ F src/pager.h 6aa3050a3c684475a5a9dbad5ff1cebad612acba
 F src/parse.y 097bff733e89fbf554a07d9327046718ce364011
 F src/pragma.c 6fad83fbcc7ec6e76d91fe2805fe972ff3af6a0c
 F src/prepare.c c9bb0aacb7a571d049805699ed18f2bb136ea091
-F src/printf.c 0e4bd1413226e8aaeadec251ffcee93448400417
+F src/printf.c 2a759d2759f43f07a84771c43e8045d7f742bb04
 F src/random.c 5c754319d38abdd6acd74601ee0105504adc508a
 F src/select.c e6edf11f024a5207e34683a25f33a700a2f1b43b
 F src/shell.c 484e7297e066f22830f9c15d7abbcdd2acb097b0
@@ -166,7 +166,7 @@ F src/test_devsym.c 6012cb8e3acf812513511025a4fa5d626e0ba19b
 F src/test_func.c ade4f0117cc96c5a05682e1ef38b84320a866ad9
 F src/test_hexio.c 2f1122aa3f012fa0142ee3c36ce5c902a70cd12f
 F src/test_loadext.c df8ab3a6481ddebbdf0d28ebac5d9e0790f7860f
-F src/test_malloc.c e762a634a858417eee7225203fc2a5c564b9db20
+F src/test_malloc.c e9e1500f85c50964adc34892045410c08aaf67ff
 F src/test_md5.c 28209a4e2068711b5443c33104fe41f21d160071
 F src/test_mutex.c 64c88ef9fed47c896fe470af03bffcd0f6f058f2
 F src/test_onefile.c 243157b10275251c5dc2d6619aee2ff9ae22379c
@@ -177,7 +177,7 @@ F src/test_tclvar.c 73530070df8378571c8ce6bbbbb993236ae3ad0b
 F src/test_thread.c e297dd41db0b249646e69f97d36ec13e56e8b730
 F src/tokenize.c b5fdc79fb7e00077b9c02af7a0da3b89c9f3398e
 F src/trigger.c bdb56bb9db1a7b18f8505484051221ab5123f21d
-F src/update.c 945242ccc4fa09799333632baf6b47c657f43cbc
+F src/update.c 4e698fcc0c91c241a960304c4236dc3a49603155
 F src/utf.c 8d52f620a7153d90b058502124fe51d821fcdf57
 F src/util.c fbfb7fe4344e93245d8fc2ef975c6d2340f81388
 F src/vacuum.c ef342828002debc97514617af3424aea8ef8522c
@@ -188,7 +188,7 @@ F src/vdbeapi.c a7c6b8db324cf7eccff32de871dea36aa305c994
 F src/vdbeaux.c 734d27d1e18bb4fb3c7f94d499039a8d3bbf8407
 F src/vdbeblob.c 9345f6dcd675fdcfdb537d2d2f487542d9ea136a
 F src/vdbefifo.c c46dae1194e4277bf007144d7e5b0c0b1c24f136
-F src/vdbemem.c 3a27b04a25e933a46e9609356426f802fd1ef945
+F src/vdbemem.c 0c72b58ffd759676ce4829f42bacb83842a58c21
 F src/vtab.c 2096c03ec5540a43c8c73a8f43407dfd3549a982
 F src/where.c 3324f8273a9c40d4b04b65cdef0a8c4954c1cce6
 F tclinstaller.tcl 4356d9d94d2b5ed5e68f9f0c80c4df3048dd7617
@@ -412,7 +412,7 @@ F test/misc3.test 7212ed8dad01427e9acab9bd3e7e5e2c2e89be9e
 F test/misc4.test 91e8ed25c092c2bb4e0bb01864631e2930f8d7de
 F test/misc5.test 0b68dcb630d44af2dbcdca94dd2b17c8d580f6fa
 F test/misc6.test 953cc693924d88e6117aeba16f46f0bf5abede91
-F test/misc7.test 26e0d948a413bca61ed031159907a03d64647409
+F test/misc7.test 68198e6a699f0e8e8e7641d597a9e77c87c961d6
 F test/misuse.test 30b3a458e5a70c31e74c291937b6c82204c59f33
 F test/mutex1.test 77719e9da234ba23f50e89e9fb19be8c116ad27a
 F test/mutex2.test a006d753714ea7e00b90b6f9c061bdde5be16435
@@ -428,7 +428,7 @@ F test/pagesize.test e0a8b3fe80f8b8e808d94a00734c7a18c76c407e
 F test/permutations.test af83024a469d1cade2a6ca9ce33e61bcdd7c2672
 F test/pragma.test e1984ed47f699a4a817008dab4111be31ee8b935
 F test/pragma2.test 5364893491b9231dd170e3459bfc2e2342658b47
-F test/printf.test b04797fc069ffad3ec2e45980bbfa1671dd66550
+F test/printf.test 262a5acd3158f788e9bdf7f18d718f3af32ff6ef
 F test/progress.test 5b075c3c790c7b2a61419bc199db87aaf48b8301 x
 F test/ptrchng.test 83150cb7b513e33cce90fdc68f4b1817551857c0
 F test/quick.test 3dba257b9d4e06e1b0199bc1401052f554ab5f14
@@ -480,7 +480,7 @@ F test/tableapi.test 892208d49e7be4817a4d3e4f641dbcbbee8cd03c
 F test/tclsqlite.test 3dfb48f46de4353376fad835390b493ba066b4dc
 F test/tempdb.test b88ac8a19823cf771d742bf61eef93ef337c06b1
 F test/temptable.test 19b851b9e3e64d91e9867619b2a3f5fffee6e125
-F test/tester.tcl 4cb72d06312d635bf7281b23ddc388f3b0e19f82
+F test/tester.tcl fbb53d7a92ab9156cf123a2dd47528a22c649860
 F test/thread001.test 8fbd9559da0bbdc273e00318c7fd66c162020af7
 F test/thread002.test 2c4ad2c386f60f6fe268cd91c769ee35b3c1fd0b
 F test/thread1.test 776c9e459b75ba905193b351926ac4019b049f35
@@ -600,7 +600,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
 F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 1dbced29de5f59ba2ebf877edcadf171540374d1
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
-P 8aae4fe7e702b7636fba1fd609a0ca22fdcc3371
-R cfbfcaf3163b710506b897f4bbc58497
-U danielk1977
-Z 3e68bbb0c53d3688bc63cc9fa9482f9f
+P 417aa1580abec8cc335dcb6ac36245c081a31ef8
+R 4491ab2e53ba152326327f2a45cdeff6
+U drh
+Z 410f438828d348b456a7ce8e20b13c60
diff --git a/manifest.uuid b/manifest.uuid
index e598fde1b4..3b1234278d 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-417aa1580abec8cc335dcb6ac36245c081a31ef8
\ No newline at end of file
+2d8f7bebf0f13f3a95f1e2163e35d43229cabfea
\ No newline at end of file
diff --git a/src/printf.c b/src/printf.c
index 5a75fca225..4d1f4a18f7 100644
--- a/src/printf.c
+++ b/src/printf.c
@@ -5,7 +5,7 @@
 ** an historical reference.  Most of the "enhancements" have been backed
 ** out so that the functionality is now the same as standard printf().
 **
-** $Id: printf.c,v 1.88 2008/07/08 19:34:07 drh Exp $
+** $Id: printf.c,v 1.89 2008/07/09 16:51:51 drh Exp $
 **
 **************************************************************************
 **
@@ -68,15 +68,14 @@
 #define etPERCENT     8 /* Percent symbol. %% */
 #define etCHARX       9 /* Characters. %c */
 /* The rest are extensions, not normally found in printf() */
-#define etCHARLIT    10 /* Literal characters.  %' */
-#define etSQLESCAPE  11 /* Strings with '\'' doubled.  %q */
-#define etSQLESCAPE2 12 /* Strings with '\'' doubled and enclosed in '',
+#define etSQLESCAPE  10 /* Strings with '\'' doubled.  %q */
+#define etSQLESCAPE2 11 /* Strings with '\'' doubled and enclosed in '',
                           NULL pointers replaced by SQL NULL.  %Q */
-#define etTOKEN      13 /* a pointer to a Token structure */
-#define etSRCLIST    14 /* a pointer to a SrcList */
-#define etPOINTER    15 /* The %p conversion */
-#define etSQLESCAPE3 16 /* %w -> Strings with '\"' doubled */
-#define etORDINAL    17 /* %r -> 1st, 2nd, 3rd, 4th, etc.  English only */
+#define etTOKEN      12 /* a pointer to a Token structure */
+#define etSRCLIST    13 /* a pointer to a SrcList */
+#define etPOINTER    14 /* The %p conversion */
+#define etSQLESCAPE3 15 /* %w -> Strings with '\"' doubled */
+#define etORDINAL    16 /* %r -> 1st, 2nd, 3rd, 4th, etc.  English only */
 
 
 /*
@@ -444,9 +443,7 @@ void sqlite3VXPrintf(
           const char *pre;
           char x;
           pre = &aPrefix[infop->prefix];
-          if( *bufpt!=pre[0] ){
-            for(; (x=(*pre))!=0; pre++) *(--bufpt) = x;
-          }
+          for(; (x=(*pre))!=0; pre++) *(--bufpt) = x;
         }
         length = &buf[etBUFSIZE-1]-bufpt;
         break;
@@ -485,9 +482,11 @@ void sqlite3VXPrintf(
           while( realvalue>=1e32 && exp<=350 ){ realvalue *= 1e-32; exp+=32; }
           while( realvalue>=1e8 && exp<=350 ){ realvalue *= 1e-8; exp+=8; }
           while( realvalue>=10.0 && exp<=350 ){ realvalue *= 0.1; exp++; }
-          while( realvalue<1e-8 && exp>=-350 ){ realvalue *= 1e8; exp-=8; }
-          while( realvalue<1.0 && exp>=-350 ){ realvalue *= 10.0; exp--; }
-          if( exp>350 || exp<-350 ){
+          if( realvalue>0.0 ){
+            while( realvalue<1e-8 ){ realvalue *= 1e8; exp-=8; }
+            while( realvalue<1.0 ){ realvalue *= 10.0; exp--; }
+          }
+          if( exp>350 ){
             if( prefix=='-' ){
               bufpt = "-Inf";
             }else if( prefix=='+' ){
@@ -545,7 +544,8 @@ void sqlite3VXPrintf(
         }
         /* "0" digits after the decimal point but before the first
         ** significant digit of the number */
-        for(e2++; e2<0 && precision>0; precision--, e2++){
+        for(e2++; e2<0; precision--, e2++){
+          assert( precision>0 );
           *(bufpt++) = '0';
         }
         /* Significant digits after the decimal point */
@@ -565,7 +565,7 @@ void sqlite3VXPrintf(
           }
         }
         /* Add the "eNNN" suffix */
-        if( flag_exp || (xtype==etEXP && exp) ){
+        if( flag_exp || xtype==etEXP ){
           *(bufpt++) = aDigits[infop->charset];
           if( exp<0 ){
             *(bufpt++) = '-'; exp = -exp;
@@ -610,9 +610,8 @@ void sqlite3VXPrintf(
         bufpt = buf;
         length = 1;
         break;
-      case etCHARLIT:
       case etCHARX:
-        c = buf[0] = (xtype==etCHARX ? va_arg(ap,int) : *++fmt);
+        c = buf[0] = va_arg(ap,int);
         if( precision>=0 ){
           for(idx=1; idx<precision; idx++) buf[idx] = c;
           length = precision;
@@ -670,7 +669,7 @@ void sqlite3VXPrintf(
       }
       case etTOKEN: {
         Token *pToken = va_arg(ap, Token*);
-        if( pToken && pToken->z ){
+        if( pToken ){
           sqlite3StrAccumAppend(pAccum, (const char*)pToken->z, pToken->n);
         }
         length = width = 0;
diff --git a/src/test_malloc.c b/src/test_malloc.c
index a35562a5f6..d5eeef7e36 100644
--- a/src/test_malloc.c
+++ b/src/test_malloc.c
@@ -13,7 +13,7 @@
 ** This file contains code used to implement test interfaces to the
 ** memory allocation subsystem.
 **
-** $Id: test_malloc.c,v 1.34 2008/07/09 13:28:54 drh Exp $
+** $Id: test_malloc.c,v 1.35 2008/07/09 16:51:51 drh Exp $
 */
 #include "sqliteInt.h"
 #include "tcl.h"
@@ -1061,6 +1061,8 @@ static int test_status(
     if( Tcl_GetIntFromObj(interp, objv[1], &op) ) return TCL_ERROR;
   }
   if( Tcl_GetBooleanFromObj(interp, objv[2], &resetFlag) ) return TCL_ERROR;
+  iValue = 0;
+  mxValue = 0;
   rc = sqlite3_status(op, &iValue, &mxValue, resetFlag);
   pResult = Tcl_NewObj();
   Tcl_ListObjAppendElement(0, pResult, Tcl_NewIntObj(rc));
diff --git a/src/update.c b/src/update.c
index 22d3012407..9df83664f9 100644
--- a/src/update.c
+++ b/src/update.c
@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle UPDATE statements.
 **
-** $Id: update.c,v 1.179 2008/07/08 23:40:20 drh Exp $
+** $Id: update.c,v 1.180 2008/07/09 16:51:51 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -458,7 +458,7 @@ void sqlite3Update(
       sqlite3ExprCacheAffinityChange(pParse, regCols, pTab->nCol);
     }
     sqlite3ReleaseTempRange(pParse, regCols, pTab->nCol);
-    if( pParse->nErr ) goto update_cleanup;
+    /* if( pParse->nErr ) goto update_cleanup; */
     sqlite3VdbeAddOp3(v, OP_Insert, newIdx, regRow, regRowid);
     sqlite3ReleaseTempReg(pParse, regRowid);
     sqlite3ReleaseTempReg(pParse, regRow);
diff --git a/src/vdbemem.c b/src/vdbemem.c
index 22ca21d9a3..a8a2129f97 100644
--- a/src/vdbemem.c
+++ b/src/vdbemem.c
@@ -15,7 +15,7 @@
 ** only within the VDBE.  Interface routines refer to a Mem using the
 ** name sqlite_value
 **
-** $Id: vdbemem.c,v 1.117 2008/07/08 22:28:49 shane Exp $
+** $Id: vdbemem.c,v 1.118 2008/07/09 16:51:51 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -82,8 +82,8 @@ int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve){
     ((pMem->flags&MEM_Static) ? 1 : 0)
   );
 
-  if( !pMem->zMalloc || sqlite3MallocSize(pMem->zMalloc)<n ){
-    n = (n>32?n:32);
+  if( n<32 ) n = 32;
+  if( sqlite3MallocSize(pMem->zMalloc)<n ){
     if( preserve && pMem->z==pMem->zMalloc ){
       pMem->z = pMem->zMalloc = sqlite3DbReallocOrFree(pMem->db, pMem->z, n);
       if( !pMem->z ){
diff --git a/test/misc7.test b/test/misc7.test
index c9db96cf18..32841df25a 100644
--- a/test/misc7.test
+++ b/test/misc7.test
@@ -10,7 +10,7 @@
 #***********************************************************************
 # This file implements regression tests for SQLite library.
 #
-# $Id: misc7.test,v 1.19 2008/03/15 14:53:05 drh Exp $
+# $Id: misc7.test,v 1.20 2008/07/09 16:51:52 drh Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -446,6 +446,17 @@ do_test misc7-18.1 {
   }
 } {}
 
+# Testing boundary conditions on sqlite3_status()
+#
+do_test misc7-19.1 {
+  sqlite3_status -1 0
+} {21 0 0}
+do_test misc7-19.2 {
+  sqlite3_status 1000 0
+} {21 0 0}
+
+
+
 db close
 file delete -force test.db
 
diff --git a/test/printf.test b/test/printf.test
index d1b09a4b53..346992de19 100644
--- a/test/printf.test
+++ b/test/printf.test
@@ -11,7 +11,7 @@
 # This file implements regression tests for SQLite library.  The
 # focus of this file is testing the sqlite_*_printf() interface.
 #
-# $Id: printf.test,v 1.29 2008/07/08 02:24:03 drh Exp $
+# $Id: printf.test,v 1.30 2008/07/09 16:51:52 drh Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -3400,7 +3400,53 @@ do_test printf-2.8.14.8 {
 do_test printf-2.8.14.9 {
   sqlite3_mprintf_double {abc: %d %d (%3.2g) :xyz} 3 2 3.38826392e-110
 } {abc: 3 2 (3.4e-110) :xyz}
+do_test printf-2.8.15.1 {
+  sqlite3_mprintf_double {abc: (% *.*f) :xyz} 3 2 3.38826392e-110
+} {abc: ( 0.00) :xyz}
+do_test printf-2.8.15.2 {
+  sqlite3_mprintf_double {abc: (% *.*e) :xyz} 3 2 3.38826392e-110
+} {abc: ( 3.39e-110) :xyz}
+do_test printf-2.8.15.3 {
+  sqlite3_mprintf_double {abc: (% *.*g) :xyz} 3 2 3.38826392e-110
+} {abc: ( 3.4e-110) :xyz}
+do_test printf-2.8.15.4 {
+  sqlite3_mprintf_double {abc: %d %d (% g) :xyz} 3 2 3.38826392e-110
+} {abc: 3 2 ( 3.38826e-110) :xyz}
+do_test printf-2.8.15.5 {
+  sqlite3_mprintf_double {abc: %d %d (% #g) :xyz} 3 2 3.38826392e-110
+} {abc: 3 2 ( 3.38826e-110) :xyz}
+do_test printf-2.8.15.6 {
+  sqlite3_mprintf_double {abc: %d %d (%0 10g) :xyz} 3 2 3.38826392e-110
+} {abc: 3 2 ( 3.38826e-110) :xyz}
+do_test printf-2.8.15.7 {
+  sqlite3_mprintf_double {abc: %d %d (% 3.2f) :xyz} 3 2 3.38826392e-110
+} {abc: 3 2 ( 0.00) :xyz}
+do_test printf-2.8.15.8 {
+  sqlite3_mprintf_double {abc: %d %d (% 3.2e) :xyz} 3 2 3.38826392e-110
+} {abc: 3 2 ( 3.39e-110) :xyz}
+do_test printf-2.8.15.9 {
+  sqlite3_mprintf_double {abc: %d %d (% 3.2g) :xyz} 3 2 3.38826392e-110
+} {abc: 3 2 ( 3.4e-110) :xyz}
 
+do_test printf-2.9.1 {
+  sqlite3_mprintf_double {abc: %d %d (%5.0g) :xyz} 0 0 1.234
+} {abc: 0 0 (    1) :xyz}
+do_test printf-2.9.2 {
+  sqlite3_mprintf_double {abc: %d %d (%+5.0g) :xyz} 0 0 1.234
+} {abc: 0 0 (   +1) :xyz}
+do_test printf-2.9.3 {
+  sqlite3_mprintf_double {abc: %d %d (%+-5.0g) :xyz} 0 0 1.234
+} {abc: 0 0 (+1   ) :xyz}
+
+do_test printf-2.10.1 {
+  sqlite3_mprintf_double {abc: %d %d (%-010.5f) :xyz} 0 0 1.234
+} {abc: 0 0 (1.23400   ) :xyz}
+do_test printf-2.10.2 {
+  sqlite3_mprintf_double {abc: %d %d (%010.5f) :xyz} 0 0 1.234
+} {abc: 0 0 (0001.23400) :xyz}
+do_test printf-2.10.3 {
+  sqlite3_mprintf_double {abc: %d %d (%+010.5f) :xyz} 0 0 1.234
+} {abc: 0 0 (+001.23400) :xyz}
 
 do_test printf-3.1 {
   sqlite3_mprintf_str {A String: (%*.*s)} 10 10 {This is the string}
@@ -3615,10 +3661,22 @@ do_test printf-14.3 {
 do_test printf-14.4 {
   sqlite3_mprintf_str {abc-%#} 0 0 {not used}
 } {abc-}
+do_test printf-14.5 {
+  sqlite3_mprintf_str {abc-%*.*s-xyz} 10 -10 {a_very_long_string}
+} {abc-a_very_lon-xyz}
+do_test printf-14.6 {
+  sqlite3_mprintf_str {abc-%5.10/} 0 0 {not used}
+} {abc-}
+do_test printf-14.7 {
+  sqlite3_mprintf_str {abc-%05.5d} 123 0 {not used}
+} {abc-00123}
+do_test printf-14.8 {
+  sqlite3_mprintf_str {abc-%05.5d} 1234567 0 {not used}
+} {abc-1234567}
 
 for {set i 2} {$i<200} {incr i} {
   set res [string repeat { } [expr {$i-1}]]x
-  do_test printf-14.10.$i "
+  do_test printf-14.90.$i "
     sqlite3_mprintf_str {%*.*s} $i 500 x
   " $res
 }
diff --git a/test/tester.tcl b/test/tester.tcl
index a23d005dc1..8eac43c202 100644
--- a/test/tester.tcl
+++ b/test/tester.tcl
@@ -11,7 +11,7 @@
 # This file implements some common TCL routines used for regression
 # testing the SQLite library
 #
-# $Id: tester.tcl,v 1.129 2008/07/08 12:07:33 danielk1977 Exp $
+# $Id: tester.tcl,v 1.130 2008/07/09 16:51:52 drh Exp $
 
 #
 # What for user input before continuing.  This gives an opportunity
@@ -287,6 +287,16 @@ proc finalize_testing {} {
   if {$nErr>0} {
     puts "Failures on these tests: $::failList"
   }
+  set failsafe [lindex [sqlite3_status SQLITE_STATUS_FAILSAFE 1] 1]
+  if {$failsafe} {
+    puts "Failsafe error code [format 0x%08x $failsafe]"
+    incr nErr
+  }
+  set fs2 [lindex [sqlite3_status SQLITE_STATUS_FAILSAFE 0] 1]
+  if {$fs2} {
+    puts "Failsafe failed to reset"
+    incr nErr
+  }
   if {[llength $omitList]>0} {
     puts "Omitted test cases:"
     set prec {}