diff --git a/ext/fts5/fts5Int.h b/ext/fts5/fts5Int.h
index 0ed291c955..4311faceb5 100644
--- a/ext/fts5/fts5Int.h
+++ b/ext/fts5/fts5Int.h
@@ -59,6 +59,22 @@ typedef sqlite3_uint64 u64;
 # define LARGEST_INT64  (0xffffffff|(((i64)0x7fffffff)<<32))
 # define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64)
 
+/* The uptr type is an unsigned integer large enough to hold a pointer
+*/
+#if defined(HAVE_STDINT_H)
+  typedef uintptr_t uptr;
+#elif SQLITE_PTRSIZE==4
+  typedef u32 uptr;
+#else
+  typedef u64 uptr;
+#endif
+
+#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC
+# define EIGHT_BYTE_ALIGNMENT(X)   ((((uptr)(X) - (uptr)0)&3)==0)
+#else
+# define EIGHT_BYTE_ALIGNMENT(X)   ((((uptr)(X) - (uptr)0)&7)==0)
+#endif
+
 #endif
 
 /* Truncate very long tokens to this many bytes. Hard limit is 
diff --git a/ext/fts5/fts5_index.c b/ext/fts5/fts5_index.c
index 5685f14438..1f0a68d3eb 100644
--- a/ext/fts5/fts5_index.c
+++ b/ext/fts5/fts5_index.c
@@ -859,6 +859,7 @@ static Fts5Data *fts5DataRead(Fts5Index *p, i64 iRowid){
   }
 
   assert( (pRet==0)==(p->rc!=SQLITE_OK) );
+  assert( pRet==0 || EIGHT_BYTE_ALIGNMENT( pRet->p ) );
   return pRet;
 }
 
diff --git a/manifest b/manifest
index b2914f4032..c16b3fa0d4 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fixes\sfor\splatforms\swith\s32-bit\spointers\sthat\srequire\s64-bit\svalues\sto\sbe\saligned.
-D 2024-07-13T16:53:56.369
+C Add\sextra\sassert()\sstatements\sto\sthe\sfixes\son\sthis\sbranch.
+D 2024-07-17T16:27:36.667
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -93,13 +93,13 @@ F ext/fts3/unicode/mkunicode.tcl d5aebf022fa4577ee8cdf27468f0d847879993959101f6d
 F ext/fts3/unicode/parseunicode.tcl a981bd6466d12dd17967515801c3ff23f74a281be1a03cf1e6f52a6959fc77eb
 F ext/fts5/extract_api_docs.tcl bc3a0ca78be7d3df08e7602c00ca48021ebae40682d75eb001bfdf6e54ffb44e
 F ext/fts5/fts5.h 6b49ce6eb2e395e7fd84557b21d32f5de8041f2fada4c617e481e99427e24b6e
-F ext/fts5/fts5Int.h 407ee36addad0ae6df5d37a811f0bd509ab6708b29640884ed5c7509e5f75143
+F ext/fts5/fts5Int.h 41fb3a2dd40e818cc96c6f4176dbdf2aaa8f57043cfc9a8f2676e7e6a72ad764
 F ext/fts5/fts5_aux.c 4584e88878e54828bf7d4d0d83deedd232ec60628b7731be02bad6adb62304b1
 F ext/fts5/fts5_buffer.c 0eec58bff585f1a44ea9147eae5da2447292080ea435957f7488c70673cb6f09
 F ext/fts5/fts5_config.c 68cb87a49215f8e7028000b681df4057c430a4a6afbd676463886da94c9e1c37
 F ext/fts5/fts5_expr.c c7336d5f9ecc0e2b014d700be2bec0ea383b0e82c494a7c5c4ac622327c2bfad
 F ext/fts5/fts5_hash.c adda4272be401566a6e0ba1acbe70ee5cb97fce944bc2e04dc707152a0ec91b1
-F ext/fts5/fts5_index.c 7c674d147def32de069f42b0c79b7bd1c8bdbd2b6fdd7607ff7cc5a4278f57dd
+F ext/fts5/fts5_index.c eb9a0dda3bc6ef969a6be8d2746af56856e67251810ddba08622b45be8477abe
 F ext/fts5/fts5_main.c 77fefb37e7931095a5ff271a28fbe4f73ec46d5492ef1f35d405d98e137ad8ed
 F ext/fts5/fts5_storage.c f9e31b0d155e9b2c92d5d3a09ad7a56b937fbf1c7f962e10f4ca6281349f3934
 F ext/fts5/fts5_tcl.c fdf7e2bb9a9186cfcaf2d2ce11d338309342b7a7593c2812bc54455db53da5d2
@@ -688,7 +688,7 @@ F sqlite3.1 acdff36db796e2d00225b911d3047d580cd136547298435426ce9d40347973cc
 F sqlite3.pc.in 48fed132e7cb71ab676105d2a4dc77127d8c1f3a
 F sqlite_cfg.h.in baf2e409c63d4e7a765e17769b6ff17c5a82bbd9cbf1e284fd2e4cefaff3fcf2
 F src/alter.c e1b6782b85dd758f89e5c588e4e3eb82638c2dafc0c857b79a43bb8ec1746fca
-F src/analyze.c a3df28274e2565ba5656577d7e3fd262169a213e6eb0bd47890e0f0729a4031c
+F src/analyze.c 5c4e2bfd0aa8e5157f7fb91a17d86905510a74397326dc5767ec4e0588a4eea5
 F src/attach.c cc9d00d30da916ff656038211410ccf04ed784b7564639b9b61d1839ed69fd39
 F src/auth.c 19b7ccacae3dfba23fc6f1d0af68134fa216e9040e53b0681b4715445ea030b4
 F src/backup.c 5c97e8023aab1ce14a42387eb3ae00ba5a0644569e3476f38661fa6f824c3523
@@ -742,12 +742,12 @@ F src/os_setup.h 6011ad7af5db4e05155f385eb3a9b4470688de6f65d6166b8956e58a3d87210
 F src/os_unix.c 2ea8d3ed496b8d1f9332a9505653424e5464fd797ea9d91f8e2e62f9dd0298d0
 F src/os_win.c 6ff43bac175bd9ed79e7c0f96840b139f2f51d01689a638fd05128becf94908a
 F src/os_win.h 7b073010f1451abe501be30d12f6bc599824944a
-F src/pager.c 9beb80f6e330dd63c5d8ba0f7a7f3a55fff22067a68d424949c389bfc6fa0c56
+F src/pager.c b08600ebf0db90b6d1e9b8b6577c6fa3877cbe1a100bd0b2899e4c6e9adad4b3
 F src/pager.h 4b1140d691860de0be1347474c51fee07d5420bd7f802d38cbab8ea4ab9f538a
 F src/parse.y 2bd540b3b1e79017eb41fca2396633a75e7dd430c05383c61fe52c6f4e97c6d8
-F src/pcache.c 040b165f30622a21b7a9a77c6f2e4877a32fb7f22d4c7f0d2a6fa6833a156a75
+F src/pcache.c 588cc3c5ccaaadde689ed35ce5c5c891a1f7b1f4d1f56f6cf0143b74d8ee6484
 F src/pcache.h 1497ce1b823cf00094bb0cf3bac37b345937e6f910890c626b16512316d3abf5
-F src/pcache1.c a5d9c258021fb0ab9a47c4ff9d177cca138e0c0a09ff0384a94954a935c4d11a
+F src/pcache1.c 49516ad7718a3626f28f710fa7448ef1fce3c07fd169acbb4817341950264319
 F src/pragma.c 52bfbf6dfd668b69b5eb9bd1186e3a67367c8453807150d6e75239229924f684
 F src/pragma.h e690a356c18e98414d2e870ea791c1be1545a714ba623719deb63f7f226d8bb7
 F src/prepare.c d99931f45416652895e502328ca49fe782cfc4e1ebdcda13b3736d991ebf42ce
@@ -825,7 +825,7 @@ F src/upsert.c 2e60567a0e9e8520c18671b30712a88dc73534474304af94f32bb5f3ef65ac65
 F src/utf.c f23165685a67b4caf8ec08fb274cb3f319103decfb2a980b7cfd55d18dfa855e
 F src/util.c 5d1a0134cf4240648d1c6bb5cc8efaca0ea2b5d5c840985aec7e947271f04375
 F src/vacuum.c 604fcdaebe76f3497c855afcbf91b8fa5046b32de3045bab89cc008d68e40104
-F src/vdbe.c 1de6780bfff80c58cae19b926efd9b8df971eac08aa482497a93a5e61b92e2f7
+F src/vdbe.c de13de572eccb688b2b7cf50e2f9005c44bf9ae89e35245ef8eadfc60dfd2764
 F src/vdbe.h c2549a215898a390de6669cfa32adba56f0d7e17ba5a7f7b14506d6fd5f0c36a
 F src/vdbeInt.h 949669dfd8a41550d27dcb905b494f2ccde9a2e6c1b0b04daa1227e2e74c2b2c
 F src/vdbeapi.c 80235ac380e9467fec1cb0883354d841f2a771976e766995f7e0c77f845406df
@@ -2195,11 +2195,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 6dcfcc7e1c0772b11aec750bb75899a5c8e452735ecf5028c001fbaa7aa6fda0
-R 72be5f41531861618cfe126b36dd6698
-T *branch * alignment-fixes
-T *sym-alignment-fixes *
-T -sym-trunk *
+P 2212d7488ed4ec2839ffa45cb9567056b36519434834634e4ecc441c330694d7
+R 4685bc0dc8bcecbaad259957ed39b003
 U dan
-Z b9169a304c4bea3372bed518e2910d85
+Z 08ec31b4265ce331614f6c37f02cc9dd
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index e88199e310..44074d6865 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-2212d7488ed4ec2839ffa45cb9567056b36519434834634e4ecc441c330694d7
+81b6360050eea95e4367de1b41b5864a640b4d1c5c8fc3bea3b96ed770cb0325
diff --git a/src/analyze.c b/src/analyze.c
index 8c48a8ff2a..774eeeed26 100644
--- a/src/analyze.c
+++ b/src/analyze.c
@@ -1832,6 +1832,7 @@ static int loadStatTbl(
       return SQLITE_NOMEM_BKPT;
     }
     pSpace = (tRowcnt*)&pIdx->aSample[nSample];
+    assert( EIGHT_BYTE_ALIGNMENT( pSpace ) );
     pIdx->aAvgEq = pSpace; pSpace += nIdxCol;
     pIdx->pTable->tabFlags |= TF_HasStat4;
     for(i=0; i<nSample; i++){
diff --git a/src/pager.c b/src/pager.c
index 268dc7db31..1ac858a070 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -4064,6 +4064,7 @@ static int pagerAcquireMapPage(
       return SQLITE_NOMEM_BKPT;
     }
     p->pExtra = (void *)&p[1];
+    assert( EIGHT_BYTE_ALIGNMENT( p->pExtra ) );
     p->flags = PGHDR_MMAP;
     p->nRef = 1;
     p->pPager = pPager;
diff --git a/src/pcache.c b/src/pcache.c
index 2974b0810a..3429284dc9 100644
--- a/src/pcache.c
+++ b/src/pcache.c
@@ -512,6 +512,7 @@ static SQLITE_NOINLINE PgHdr *pcacheFetchFinishWithInit(
   pPgHdr->pData = pPage->pBuf;
   pPgHdr->pExtra = (void *)&pPgHdr[1];
   memset(pPgHdr->pExtra, 0, 8);
+  assert( EIGHT_BYTE_ALIGNMENT( pPgHdr->pExtra ) );
   pPgHdr->pCache = pCache;
   pPgHdr->pgno = pgno;
   pPgHdr->flags = PGHDR_CLEAN;
diff --git a/src/pcache1.c b/src/pcache1.c
index a1f8a1dbb4..a0a8c7e28c 100644
--- a/src/pcache1.c
+++ b/src/pcache1.c
@@ -321,6 +321,7 @@ static int pcache1InitBulk(PCache1 *pCache){
       PgHdr1 *pX = (PgHdr1*)&zBulk[pCache->szPage];
       pX->page.pBuf = zBulk;
       pX->page.pExtra = (u8*)pX + ROUND8(sizeof(*pX));
+      assert( EIGHT_BYTE_ALIGNMENT( pX->page.pExtra ) );
       pX->isBulkLocal = 1;
       pX->isAnchor = 0;
       pX->pNext = pCache->pFree;
@@ -458,6 +459,7 @@ static PgHdr1 *pcache1AllocPage(PCache1 *pCache, int benignMalloc){
     p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage];
     p->page.pBuf = pPg;
     p->page.pExtra = (u8*)p + ROUND8(sizeof(*p));
+    assert( EIGHT_BYTE_ALIGNMENT( p->page.pExtra ) );
     p->isBulkLocal = 0;
     p->isAnchor = 0;
     p->pLruPrev = 0;           /* Initializing this saves a valgrind error */
diff --git a/src/vdbe.c b/src/vdbe.c
index 79368fd06b..d097bfd8b9 100644
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -7690,6 +7690,7 @@ case OP_AggStep: {
   pCtx = sqlite3DbMallocRawNN(db, nAlloc + sizeof(Mem));
   if( pCtx==0 ) goto no_mem;
   pCtx->pOut = (Mem*)((u8*)pCtx + nAlloc);
+  assert( EIGHT_BYTE_ALIGNMENT(pCtx->pOut) );
 
   sqlite3VdbeMemInit(pCtx->pOut, db, MEM_Null);
   pCtx->pMem = 0;