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| author | Jesus Cea <jcea@jcea.es> | 2012-09-10 20:45:47 (GMT) |
|---|---|---|
| committer | Jesus Cea <jcea@jcea.es> | 2012-09-10 20:45:47 (GMT) |
| commit | 20f0ea1f610842c98bbfcf653f4414b88f767083 (patch) | |
| tree | 8296a1be6e25c682069ab19f52f5bfcfc9b2f70f /Modules | |
| parent | 3fb774ec5f64f0856767e5726d8083a5bf63f33e (diff) | |
| download | cpython-20f0ea1f610842c98bbfcf653f4414b88f767083.zip cpython-20f0ea1f610842c98bbfcf653f4414b88f767083.tar.gz cpython-20f0ea1f610842c98bbfcf653f4414b88f767083.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 8cf0e87..62d934c 100644 --- a/Modules/mmapmodule.c +++ b/Modules/mmapmodule.c @@ -1388,6 +1388,11 @@ 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"); |