diff --git a/ext/fts3/fts3_write.c b/ext/fts3/fts3_write.c
index b0f38b72e8..bb5e515da6 100644
--- a/ext/fts3/fts3_write.c
+++ b/ext/fts3/fts3_write.c
@@ -3611,6 +3611,7 @@ static int fts3IncrmergePush(
   }
 
   assert( 0 );
+  return 0;
 }
 
 /*
@@ -4710,7 +4711,7 @@ static int fts3DoAutoincrmerge(
 ** Return a 64-bit checksum for the FTS index entry specified by the
 ** arguments to this function.
 */
-static i64 fts3ChecksumEntry(
+static u64 fts3ChecksumEntry(
   const char *zTerm,              /* Pointer to buffer containing term */
   int nTerm,                      /* Size of zTerm in bytes */
   int iLangid,                    /* Language id for current row */
@@ -4720,7 +4721,7 @@ static i64 fts3ChecksumEntry(
   int iPos                        /* Position */
 ){
   int i;
-  i64 ret = iDocid;
+  u64 ret = (u64)iDocid;
 
   ret += (ret<<3) + iLangid;
   ret += (ret<<3) + iIndex;
@@ -4740,7 +4741,7 @@ static i64 fts3ChecksumEntry(
 ** Otherwise, if an error occurs, *pRc is set to an SQLite error code. The
 ** return value is undefined in this case.
 */
-static i64 fts3ChecksumIndex(
+static u64 fts3ChecksumIndex(
   Fts3Table *p,                   /* FTS3 table handle */
   int iLangid,                    /* Language id to return cksum for */
   int iIndex,                     /* Index to cksum (0..p->nIndex-1) */
@@ -4749,7 +4750,7 @@ static i64 fts3ChecksumIndex(
   Fts3SegFilter filter;
   Fts3MultiSegReader csr;
   int rc;
-  i64 cksum = 0;
+  u64 cksum = 0;
 
   assert( *pRc==SQLITE_OK );
 
@@ -4815,8 +4816,8 @@ static i64 fts3ChecksumIndex(
 */
 static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){
   int rc = SQLITE_OK;             /* Return code */
-  i64 cksum1 = 0;                 /* Checksum based on FTS index contents */
-  i64 cksum2 = 0;                 /* Checksum based on %_content contents */
+  u64 cksum1 = 0;                 /* Checksum based on FTS index contents */
+  u64 cksum2 = 0;                 /* Checksum based on %_content contents */
   sqlite3_stmt *pAllLangid = 0;   /* Statement to return all language-ids */
 
   /* This block calculates the checksum according to the FTS index. */
diff --git a/manifest b/manifest
index f0ab85f06c..f8e7923050 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Add\sa\scomment\sto\sexplain\show\sthe\sFTS\sintegrity-check\sworks.
-D 2012-03-26T10:47:03.798
+C Modify\sthe\sFTS\sintegrity-check\sso\sthat\sthe\schecksums\sdo\snot\sdepend\son\sthe\sresults\sof\ssigned\sinteger\soverflow,\swhich\sis\sundefined\sin\sC.
+D 2012-03-26T10:57:31.278
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 2f37e468503dbe79d35c9f6dffcf3fae1ae9ec20
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -78,7 +78,7 @@ F ext/fts3/fts3_test.c 6b7cc68aef4efb084e1449f7d20c4b20d3bdf6b4
 F ext/fts3/fts3_tokenizer.c 3da7254a9881f7e270ab28e2004e0d22b3212bce
 F ext/fts3/fts3_tokenizer.h 66dec98e365854b6cd2d54f1a96bb6d428fc5a68
 F ext/fts3/fts3_tokenizer1.c 5c98225a53705e5ee34824087478cf477bdb7004
-F ext/fts3/fts3_write.c 554368a941e89bf556d653d72eac4ceb8c5a30ef
+F ext/fts3/fts3_write.c 6014014cf0257d314d29d7eb50e0c88d85356d65
 F ext/fts3/fts3speed.tcl b54caf6a18d38174f1a6e84219950d85e98bb1e9
 F ext/fts3/mkfts3amal.tcl 252ecb7fe6467854f2aa237bf2c390b74e71f100
 F ext/icu/README.txt bf8461d8cdc6b8f514c080e4e10dc3b2bbdfefa9
@@ -999,7 +999,7 @@ F tool/tostr.awk e75472c2f98dd76e06b8c9c1367f4ab07e122d06
 F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
 F tool/warnings-clang.sh 9f406d66e750e8ac031c63a9ef3248aaa347ef2a
 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
-P 40fc8804743dfb005991e9c5ef7b0ebcb3c2e731
-R a29b15091e6e8965fd03216fe1c6e4ff
+P 64e8a116f39434a3b7347f01a47f88eef3276742
+R b3b4e0fd75a1473fbbf1af679fdf9753
 U dan
-Z 4197780953b43ba749fe7b7fcb72124a
+Z df6c781d7592577597c979769aed212b
diff --git a/manifest.uuid b/manifest.uuid
index 427ed8ce6b..98012539c6 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-64e8a116f39434a3b7347f01a47f88eef3276742
\ No newline at end of file
+f907fc3fb387e74bb66babcbf050748cb253a6fa
\ No newline at end of file