diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/corelib/io/qfsfileengine_unix.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/corelib/io/qfsfileengine_unix.cpp b/src/corelib/io/qfsfileengine_unix.cpp index 200e1af52f6..5806689182f 100644 --- a/src/corelib/io/qfsfileengine_unix.cpp +++ b/src/corelib/io/qfsfileengine_unix.cpp @@ -565,11 +565,11 @@ uchar *QFSFileEnginePrivate::map(qint64 offset, qint64 size, QFile::MemoryMapFla } if (offset < 0 || offset > maxFileOffset - || size < 0 || quint64(size) > quint64(size_t(-1))) { + || size <= 0 + || quint64(size) > quint64(size_t(-1))) { q->setError(QFile::UnspecifiedError, qt_error_string(EINVAL)); return nullptr; } - // If we know the mapping will extend beyond EOF, fail early to avoid // undefined behavior. Otherwise, let mmap have its say. if (doStat(QFileSystemMetaData::SizeAttribute) |