diff --git a/manifest b/manifest
index 00ad974b0d..af6e18e29c 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Completely\sunwind\sthe\senhanced\sprecision\ssum()\sfrom\s[a915f15a916af698]\sso\nas\snot\sto\soffend\sUBSAN\sand\sOSS-Fuzz.
-D 2023-06-30T14:01:09.017
+C Add\sextra\sdebugging\scode\sfor\ssqlite3_stmt_scanstatus_v2()\sto\stest1.c.
+D 2023-06-30T16:16:51.838
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -647,7 +647,7 @@ F src/sqliteLimit.h 33b1c9baba578d34efe7dfdb43193b366111cdf41476b1e82699e14c11ee
 F src/status.c 160c445d7d28c984a0eae38c144f6419311ed3eace59b44ac6dafc20db4af749
 F src/table.c 0f141b58a16de7e2fbe81c308379e7279f4c6b50eb08efeec5892794a0ba30d1
 F src/tclsqlite.c ecbc3c99c0d0c3ed122a913f143026c26d38d57f33e06bb71185dd5c1efe37cd
-F src/test1.c e6ab4a00671f052366a01bcb7fdf2e2f6bb4aa884cd01e738c5590dcf47a99ca
+F src/test1.c 64b8462099618a6243f63ba701eea8913046cd7377a7a77a7e3a0ada42219275
 F src/test2.c 827446e259a3b7ab949da1542953edda7b5117982576d3e6f1c24a0dd20a5cef
 F src/test3.c e5178558c41ff53236ae0271e9acb3d6885a94981d2eb939536ee6474598840e
 F src/test4.c 4533b76419e7feb41b40582554663ed3cd77aaa54e135cf76b3205098cd6e664
@@ -2041,8 +2041,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 625820e8ebfdcf513c81b1b632bbe2aa882a8fbba52001113dc6f56270fa5ceb
-R 1a82418c3ef4ddd94ec77caee044b5a7
-U drh
-Z aca079c870f1ae7b8c8d668c5fe69525
+P 85be05b66ef975f02a3e7b2984bcab97d9280c7f3b6ee1e16718de549f240d46
+R 433a85e7cf1b4578b68ff0f431f95f42
+U dan
+Z 30a28df351ab36975e3c1ccdb855302c
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 27efa20e25..5a03be41e4 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-85be05b66ef975f02a3e7b2984bcab97d9280c7f3b6ee1e16718de549f240d46
\ No newline at end of file
+f936f101406069b29218c89a36581b4497226fb61906782ea368f12d943c901c
\ No newline at end of file
diff --git a/src/test1.c b/src/test1.c
index 84d36264cf..c77aff2ed2 100644
--- a/src/test1.c
+++ b/src/test1.c
@@ -2216,6 +2216,7 @@ static int SQLITE_TCLAPI test_stmt_scanstatus(
   int flags = 0;
   int iSelectId = 0;
   int iParentId = 0;
+  int bDebug = 0;
 
   if( objc==5 ){
     struct Flag {
@@ -2223,6 +2224,7 @@ static int SQLITE_TCLAPI test_stmt_scanstatus(
       int flag;
     } aTbl[] = {
       {"complex", SQLITE_SCANSTAT_COMPLEX},
+      {"debug", -1},
       {0, 0}
     };
 
@@ -2239,7 +2241,11 @@ static int SQLITE_TCLAPI test_stmt_scanstatus(
           interp, aFlag[ii], aTbl, sizeof(aTbl[0]), "flag", 0, &iVal
       );
       if( res ) return TCL_ERROR;
-      flags |= aTbl[iVal].flag;
+      if( aTbl[iVal].flag==-1 ){
+        bDebug = 1;
+      }else{
+        flags |= aTbl[iVal].flag;
+      }
     }
   }
 
@@ -2253,6 +2259,13 @@ static int SQLITE_TCLAPI test_stmt_scanstatus(
     return TCL_ERROR;
   }
 
+  if( bDebug && 0==(flags & SQLITE_SCANSTAT_COMPLEX) ){
+    Tcl_SetObjResult(interp, 
+        Tcl_NewStringObj("may not specify debug without complex", -1)
+    );
+    return TCL_ERROR;
+  }
+
   if( idx<0 ){
     Tcl_Obj *pRet = Tcl_NewObj();
     res = sqlite3_stmt_scanstatus_v2(
@@ -2299,6 +2312,36 @@ static int SQLITE_TCLAPI test_stmt_scanstatus(
           pStmt, idx, SQLITE_SCANSTAT_NCYCLE, flags, (void*)&nCycle);
       Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj("nCycle", -1));
       Tcl_ListObjAppendElement(0, pRet, Tcl_NewWideIntObj(nCycle));
+
+      if( bDebug ){
+        int ii;
+        ScanStatus *pScan = &((Vdbe*)pStmt)->aScan[idx];
+        Tcl_Obj *pRange = Tcl_NewObj();
+        Tcl_Obj *pCsr = Tcl_NewObj();
+
+        Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj("debug_loop", -1));
+        Tcl_ListObjAppendElement(0, pRet, Tcl_NewIntObj(pScan->addrLoop));
+        Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj("debug_visit", -1));
+        Tcl_ListObjAppendElement(0, pRet, Tcl_NewIntObj(pScan->addrVisit));
+        Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj("debug_explain",-1));
+        Tcl_ListObjAppendElement(0, pRet, Tcl_NewIntObj(pScan->addrExplain));
+        for(ii=0; ii<ArraySize(pScan->aAddrRange)/2; ii++){
+          int iStart = pScan->aAddrRange[ii*2];
+          int iEnd = pScan->aAddrRange[ii*2+1];
+          if( iStart>0 ){
+            Tcl_ListObjAppendElement(0, pRange, Tcl_NewIntObj(iStart));
+            Tcl_ListObjAppendElement(0, pRange, Tcl_NewIntObj(iEnd));
+          }else if( iStart<0 ){
+            Tcl_ListObjAppendElement(0, pCsr, Tcl_NewIntObj(iEnd));
+          }
+        }
+
+        Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj("debug_range", -1));
+        Tcl_ListObjAppendElement(0, pRet, pRange);
+        Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj("debug_csr", -1));
+        Tcl_ListObjAppendElement(0, pRet, pCsr);
+      }
+
       Tcl_SetObjResult(interp, pRet);
     }else{
       Tcl_ResetResult(interp);