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-rw-r--r--src/memdb.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/memdb.c b/src/memdb.c
index c6603a1c8..e7366961f 100644
--- a/src/memdb.c
+++ b/src/memdb.c
@@ -188,7 +188,7 @@ static int memdbWrite(
sqlite_int64 iOfst
){
MemFile *p = (MemFile *)pFile;
- if( p->mFlags & SQLITE_DESERIALIZE_READONLY ) return SQLITE_READONLY;
+ if( NEVER(p->mFlags & SQLITE_DESERIALIZE_READONLY) ) return SQLITE_READONLY;
if( iOfst+iAmt>p->sz ){
int rc;
if( iOfst+iAmt>p->szAlloc
@@ -238,6 +238,11 @@ static int memdbFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){
*/
static int memdbLock(sqlite3_file *pFile, int eLock){
MemFile *p = (MemFile *)pFile;
+ if( eLock>SQLITE_LOCK_SHARED
+ && (p->mFlags & SQLITE_DESERIALIZE_READONLY)!=0
+ ){
+ return SQLITE_READONLY;
+ }
p->eLock = eLock;
return SQLITE_OK;
}