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| author | Jesus Cea <jcea@jcea.es> | 2012-09-10 20:49:50 (GMT) |
|---|---|---|
| committer | Jesus Cea <jcea@jcea.es> | 2012-09-10 20:49:50 (GMT) |
| commit | 1f2799bef45673419e96ad4ef6a923c59d1c6a85 (patch) | |
| tree | f69d47f2609cb35b8e38c6e0e557ac432ced6c0f /Modules | |
| parent | 3159cb51a77da430272bfaf42c768493c72b456a (diff) | |
| download | cpython-1f2799bef45673419e96ad4ef6a923c59d1c6a85.zip cpython-1f2799bef45673419e96ad4ef6a923c59d1c6a85.tar.gz cpython-1f2799bef45673419e96ad4ef6a923c59d1c6a85.tar.bz2 | |
#15676: mmap: add empty file check prior to offset check <- Previous patch was incomplete
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/mmapmodule.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c index e23613e..b993fdf 100644 --- a/Modules/mmapmodule.c +++ b/Modules/mmapmodule.c @@ -1342,6 +1342,11 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict) } size = (((PY_LONG_LONG) high) << 32) + low; + if (size == 0) { + PyErr_SetString(PyExc_ValueError, + "cannot mmap an empty file"); + return NULL; + } if (offset >= size) { PyErr_SetString(PyExc_ValueError, "mmap offset is greater than file size"); |