Mercurial > cpython-lru_cache-weakref
diff Objects/bufferobject.c @ 10427:e6799a855af7 legacy-trunk
Added check for negative offset for PyBuffer_FromObject and check for
negative size for PyBuffer_FromMemory. Greg Stein.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Fri, 19 Mar 1999 19:04:25 +0000 |
| parents | 083efa076366 |
| children | 62781914fadb |
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--- a/Objects/bufferobject.c Thu Mar 18 19:08:47 1999 +0000 +++ b/Objects/bufferobject.c Fri Mar 19 19:04:25 1999 +0000 @@ -55,6 +55,12 @@ { PyBufferObject * b; + if ( size < 0 ) { + PyErr_SetString(PyExc_ValueError, + "size must be zero or positive"); + return NULL; + } + b = PyObject_NEW(PyBufferObject, &PyBuffer_Type); if ( b == NULL ) return NULL; @@ -83,6 +89,12 @@ void *p; int count; + if ( offset < 0 ) { + PyErr_SetString(PyExc_ValueError, + "offset must be zero or positive"); + return NULL; + } + if ( (*pb->bf_getsegcount)(base, NULL) != 1 ) { PyErr_SetString(PyExc_TypeError, "single-segment buffer object expected"); @@ -92,7 +104,7 @@ return NULL; /* apply constraints to the start/end */ - if ( size == Py_END_OF_BUFFER ) + if ( size == Py_END_OF_BUFFER || size < 0 ) size = count; if ( offset > count ) offset = count;