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-rw-r--r--src/btree.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/btree.c b/src/btree.c
index 0a51ff030..6a9761e91 100644
--- a/src/btree.c
+++ b/src/btree.c
@@ -2593,7 +2593,7 @@ static int btreeSwapOutMmap(BtShared *pBt){
for(pCsr=pBt->pCursor; pCsr && rc==SQLITE_OK; pCsr=pCsr->pNext){
if( pCsr->iPage>=0 ){
MemPage *pPg = pCsr->apPage[0];
- if( pPg->pDbPage->flags & PGHDR_MMAP ){
+ if( pPg && pPg->pDbPage->flags & PGHDR_MMAP ){
MemPage *pNew = 0;
rc = getAndInitPage(pBt, pPg->pgno, &pNew, 0);
if( rc==SQLITE_OK && pCsr->iPage==0 ){