Index: src/os_unix.c
==================================================================
--- src/os_unix.c
+++ src/os_unix.c
@@ -3508,11 +3508,15 @@
     case SQLITE_FCNTL_CHUNK_SIZE: {
       pFile->szChunk = *(int *)pArg;
       return SQLITE_OK;
     }
     case SQLITE_FCNTL_SIZE_HINT: {
-      return fcntlSizeHint(pFile, *(i64 *)pArg);
+      int rc;
+      SimulateIOErrorBenign(1);
+      rc = fcntlSizeHint(pFile, *(i64 *)pArg);
+      SimulateIOErrorBenign(0);
+      return rc;
     }
     case SQLITE_FCNTL_PERSIST_WAL: {
       int bPersist = *(int*)pArg;
       if( bPersist<0 ){
         *(int*)pArg = (pFile->ctrlFlags & UNIXFILE_PERSIST_WAL)!=0;