enh(tdb): more debug output for page's overflow cells

source/libs/tdb/src/db/tdbPage.c

@@ -80,6 +80,7 @@ int tdbPageDestroy(SPage *pPage, void (*xFree)(void *arg, void *ptr), void *arg)
   ASSERT(xFree);
 
   for (int iOvfl = 0; iOvfl < pPage->nOverflow; iOvfl++) {
+    tdbDebug("tdbPage/destroy/free ovfl cell: %p/%p", pPage->apOvfl[iOvfl], pPage);
     tdbOsFree(pPage->apOvfl[iOvfl]);
   }
 
@@ -152,7 +153,7 @@ int tdbPageInsertCell(SPage *pPage, int idx, SCell *pCell, int szCell, u8 asOvfl
     pNewCell = (SCell *)tdbOsMalloc(szCell);
     memcpy(pNewCell, pCell, szCell);
 
-    tdbDebug("tdbPage/new ovfl cell: %p", pNewCell);
+    tdbDebug("tdbPage/insert/new ovfl cell: %p/%p", pNewCell, pPage);
 
     pPage->apOvfl[iOvfl] = pNewCell;
     pPage->aiOvfl[iOvfl] = idx;
@@ -202,7 +203,7 @@ int tdbPageDropCell(SPage *pPage, int idx, TXN *pTxn, SBTree *pBt) {
     if (pPage->aiOvfl[iOvfl] == idx) {
       // remove the over flow cell
       tdbOsFree(pPage->apOvfl[iOvfl]);
-      tdbDebug("tdbPage/free ovfl cell: %p", pPage->apOvfl[iOvfl]);
+      tdbDebug("tdbPage/drop/free ovfl cell: %p", pPage->apOvfl[iOvfl]);
       for (; (++iOvfl) < pPage->nOverflow;) {
         pPage->aiOvfl[iOvfl - 1] = pPage->aiOvfl[iOvfl] - 1;
         pPage->apOvfl[iOvfl - 1] = pPage->apOvfl[iOvfl];
@@ -255,6 +256,7 @@ void tdbPageCopy(SPage *pFromPage, SPage *pToPage, int deepCopyOvfl) {
       int szCell = (*pFromPage->xCellSize)(pFromPage, pFromPage->apOvfl[iOvfl], 0, NULL, NULL);
       pNewCell = (SCell *)tdbOsMalloc(szCell);
       memcpy(pNewCell, pFromPage->apOvfl[iOvfl], szCell);
+      tdbDebug("tdbPage/copy/new ovfl cell: %p/%p/%p", pNewCell, pToPage, pFromPage);
     }
 
     pToPage->apOvfl[iOvfl] = pNewCell;