diff --git a/manifest b/manifest
index 6ff206dd1b..394eece028 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Assume\sany\sreturn\scode\sfrom\sfcntl()\sother\sthan\s-1\sis\ssuccess.\s\sFormerly\swe\nonly\sassumed\sthat\s0\swas\ssuccess.\s\sTicket\s#2173.\s(CVS\s3754)
-D 2007-03-29T20:19:59
+C Extra\stest\scases\sto\simprove\scoverage\sof\smain.c.\s(CVS\s3755)
+D 2007-03-30T07:10:51
 F Makefile.in 2f2c3bf69faf0ae7b8e8af4f94f1986849034530
 F Makefile.linux-gcc 2d8574d1ba75f129aba2019f0b959db380a90935
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -73,7 +73,7 @@ F src/hash.h 1b3f7e2609141fd571f62199fc38687d262e9564
 F src/insert.c aa61e77807becb8b6c3ffcf53be98d20b0e6f107
 F src/legacy.c 2631df6a861f830d6b1c0fe92b9fdd745b2c0cd6
 F src/loadext.c 146fb9b9dc6133e763888d710205c32ebf8eeca2
-F src/main.c 3ca92e8f2397da413c39f5a102e5675f5c5fa78a
+F src/main.c d3b86042d836c75768f5271ce1a9cc0cb620e69b
 F src/md5.c c5fdfa5c2593eaee2e32a5ce6c6927c986eaf217
 F src/os.c 5a194b9b9a10dc66543d4ca22bc0db40c5cc5ef1
 F src/os.h 506acdfd0a63802434ceacdbfd7c006e5d90fc53
@@ -257,7 +257,7 @@ F test/lock.test 6825aea0b5885578b1b63a3b178803842c4ee9f1
 F test/lock2.test d83ba79d3c4fffdb5b926c7d8ca7a36c34288a55
 F test/lock3.test 615111293cf32aa2ed16d01c6611737651c96fb9
 F test/main.test e7212ce1023957c7209778cc87fa932bd79ba89a
-F test/malloc.test 2c39d97c8db5fdc06bb105122a59721f4ea9ac49
+F test/malloc.test d868a6b98b07928b00bca3d9874daf6885c86150
 F test/malloc2.test 4ed7d719542c4570dec9c2ebe2bbdf3a9f3b0d05
 F test/malloc3.test e965954b6f808876a63d3101fd70370320b509a7
 F test/malloc4.test 59cd02f71b363302a04c4e77b97c0a1572eaa210
@@ -274,7 +274,7 @@ F test/misc3.test 7bd937e2c62bcc6be71939faf068d506467b1e03
 F test/misc4.test b043a05dea037cca5989f3ae09552fa16119bc80
 F test/misc5.test c7d2d2a5a20dc37d3605a8067f0df5af2240122e
 F test/misc6.test 3de55ec5cadf466ada587173faa5d6a4790a8bb7
-F test/misc7.test bc52702ade3d18d94af193b487ce86b2e4704dc1
+F test/misc7.test ac433b389f5b3ffadc3cdcb370a3cd25450aeb40
 F test/misuse.test 30b3a458e5a70c31e74c291937b6c82204c59f33
 F test/notnull.test 44d600f916b770def8b095a9962dbe3be5a70d82
 F test/null.test 9503e1f63e959544c006d9f01709c5b5eab67d54
@@ -447,7 +447,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P 6195af49828bf04b61d24f116339780d3eb926a1
-R 79d0ea3ee011e976af26b5841e567527
-U drh
-Z debf887eb36a11345fb4f0356547effd
+P 8d0073c0e8408558dae39f789ac3fa2622b52365
+R 7ca43c6504a732741e356d1f89f80cf3
+U danielk1977
+Z f78f3efcdc29e953179129897cb3e69b
diff --git a/manifest.uuid b/manifest.uuid
index 68903058b7..bc9ce68070 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-8d0073c0e8408558dae39f789ac3fa2622b52365
\ No newline at end of file
+19fc3d78962d225d42372b9298be5921ec1fc8a1
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 57833fff50..40aa625953 100644
--- a/src/main.c
+++ b/src/main.c
@@ -14,7 +14,7 @@
 ** other files are for internal use by SQLite and should not be
 ** accessed by users of the library.
 **
-** $Id: main.c,v 1.363 2007/03/29 15:00:53 danielk1977 Exp $
+** $Id: main.c,v 1.364 2007/03/30 07:10:51 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -136,6 +136,9 @@ int sqlite3_close(sqlite3 *db){
   ** cannot be opened for some reason. So this routine needs to run in
   ** that case. But maybe there should be an extra magic value for the
   ** "failed to open" state.
+  **
+  ** TODO: Coverage tests do not test the case where this condition is
+  ** true. It's hard to see how to cause it without messing with threads.
   */
   if( db->magic!=SQLITE_MAGIC_CLOSED && sqlite3SafetyOn(db) ){
     /* printf("DID NOT CLOSE\n"); fflush(stdout); */
diff --git a/test/malloc.test b/test/malloc.test
index 8d9358a6ae..95346cbf93 100644
--- a/test/malloc.test
+++ b/test/malloc.test
@@ -14,7 +14,7 @@
 # special feature is used to see what happens in the library if a malloc
 # were to really fail due to an out-of-memory situation.
 #
-# $Id: malloc.test,v 1.39 2007/03/29 17:07:53 danielk1977 Exp $
+# $Id: malloc.test,v 1.40 2007/03/30 07:10:52 danielk1977 Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -546,13 +546,12 @@ do_malloc_test 20 -tclprep {
   DETACH DATABASE t2;
 } 
 
-# Test malloc failure whilst installing a foriegn key.
+# Test malloc failure whilst installing a foreign key.
 #
 do_malloc_test 21 -sqlbody {
   CREATE TABLE abc(a, b, c, FOREIGN KEY(a) REFERENCES abc(b))
 } 
 
-
 # Ensure that no file descriptors were leaked.
 do_test malloc-99.X {
   catch {db close}
diff --git a/test/misc7.test b/test/misc7.test
index 23884c47ba..7304511a12 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 1.2 2007/03/29 17:07:53 danielk1977 Exp $
+# $Id: misc7.test,v 1.3 2007/03/30 07:10:52 danielk1977 Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -68,7 +68,6 @@ proc use_up_files {} {
 execsql { CREATE TABLE abc(a PRIMARY KEY, b, c); }
 db close
 set fd_list [use_up_files]
-
 set ::go 1
 set ::n 1
 while {$::go} {
@@ -96,6 +95,59 @@ while {$::go} {
 foreach fd $fd_list {
   close $fd
 }
+db close
+#
+# End of tests for out-of-file-descriptors condition.
+#--------------------------------------------------------------------
+
+#--------------------------------------------------------------------
+# Test that the sqlite3_busy_timeout call seems to delay approximately
+# the right amount of time.
+#
+do_test misc7-6 {
+  sqlite3 db2 test.db
+  sqlite3 db test.db
+  sqlite3_busy_timeout [sqlite3_connection_pointer db] 2000
+  execsql {
+    BEGIN EXCLUSIVE;
+  } db2
+
+  # Now db2 has an exclusive lock on the database file, and db has
+  # a busy-timeout of 2000 milliseconds. So check that trying to
+  # access the database using connection db delays for at least 1500 ms.
+  #
+  set c1 [clock clicks -milliseconds]
+  catchsql {
+    SELECT * FROM sqlite_master;
+  } db
+  expr {([clock clicks -milliseconds]-$c1) > 1500 ? 1 : 0}
+} {1}
+db2 close
+
+#--------------------------------------------------------------------
+# Test that nothing goes horribly wrong when attaching a database
+# after the omit_readlock pragma has been exercised.
+#
+do_test misc7-7 {
+  file delete -force test2.db
+  file delete -force test2.db-journal
+  execsql {
+    PRAGMA omit_readlock = 1;
+    ATTACH 'test2.db' AS aux;
+    CREATE TABLE aux.hello(world);
+    SELECT name FROM aux.sqlite_master;
+  }
+} {hello}
+
+# Test malloc failure whilst installing a foriegn key.
+#
+ifcapable utf16 {
+  do_test misc7-8 {
+    encoding convertfrom unicode [sqlite3_errmsg16 0x00000000]
+  } {out of memory}
+}
+
+
 
 finish_test