With SQLITE_ENABLE_BLOCK_ATOMIC_WRITE enabled, if a transaction is committing

and there is a new freelist page at the end of the database file which would
cause the database file size to grow, ensure that page is written and the
file size grows before the block-atomic-write commits.  Fix for the
problem identified by [forum:/forumpost/3bd8d497b2|forum post 3bd8d497b2]

FossilOrigin-Name: c9fdd6805df04f05ef347e5a43506fd37a729c5924abb6e1103e871c4ac2d6dc

1 files changed, 7 insertions, 0 deletions

diff --git a/src/pager.c b/src/pager.c
index 5c2d556b3..826e90f13 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -6588,6 +6588,13 @@ int sqlite3PagerCommitPhaseOne(
         rc = sqlite3OsFileControl(fd, SQLITE_FCNTL_BEGIN_ATOMIC_WRITE, 0);
         if( rc==SQLITE_OK ){
           rc = pager_write_pagelist(pPager, pList);
+          if( rc==SQLITE_OK && pPager->dbSize>pPager->dbFileSize ){
+            char *pTmp = pPager->pTmpSpace;
+            int szPage = (int)pPager->pageSize;
+            memset(pTmp, 0, szPage);
+            rc = sqlite3OsWrite(pPager->fd, pTmp, szPage,
+                      (pPager->dbSize*pPager->pageSize)-szPage);
+          }
           if( rc==SQLITE_OK ){
             rc = sqlite3OsFileControl(fd, SQLITE_FCNTL_COMMIT_ATOMIC_WRITE, 0);
           }