diff options
Diffstat (limited to 'src/os_unix.c')
| -rw-r--r-- | src/os_unix.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/os_unix.c b/src/os_unix.c index 39a31cb18..75f923601 100644 --- a/src/os_unix.c +++ b/src/os_unix.c @@ -3710,7 +3710,9 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){ return SQLITE_OK; } case SQLITE_FCNTL_MMAP_LIMIT: { - pFile->mmapLimit = *(i64*)pArg; + i64 newLimit = *(i64*)pArg; + *(i64*)pArg = pFile->mmapLimit; + if( newLimit>=0 ) pFile->mmapLimit = newLimit; return SQLITE_OK; } #ifdef SQLITE_DEBUG |