make sure length is unsigned

benjaminp · benjaminp · commit c0e64f5027a2 · 2014-10-15T11:51:05.000-04:00
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
@@ -9489,7 +9489,7 @@ case_operation(PyObject *self,
         PyErr_SetString(PyExc_OverflowError, "string is too long");
         return NULL;
     }
-    tmp = PyMem_MALLOC(sizeof(Py_UCS4) * 3 * length);
+    tmp = PyMem_MALLOC(sizeof(Py_UCS4) * 3 * (size_t)length);
     if (tmp == NULL)
         return PyErr_NoMemory();
     newlength = perform(kind, data, length, tmp, &maxchar);

Original file line number	Diff line number	Diff line change
`@@ -9489,7 +9489,7 @@ case_operation(PyObject *self,`
`9489`	`9489`	`PyErr_SetString(PyExc_OverflowError, "string is too long");`
`9490`	`9490`	`return NULL;`
`9491`	`9491`	`}`
`9492`		`- tmp = PyMem_MALLOC(sizeof(Py_UCS4) * 3 * length);`
	`9492`	`+ tmp = PyMem_MALLOC(sizeof(Py_UCS4) * 3 * (size_t)length);`
`9493`	`9493`	`if (tmp == NULL)`
`9494`	`9494`	`return PyErr_NoMemory();`
`9495`	`9495`	`newlength = perform(kind, data, length, tmp, &maxchar);`