More inplace operator testcases

tests/run/inplace.pyx

@@ -10,6 +10,12 @@ __doc__ = u"""
 
     >>> arrays()
     19
+
+    >>> attributes()
+    26 26 26
+
+    >>> smoketest()
+    10
 """
 
 def f(a,b):
@@ -42,3 +48,38 @@ def arrays():
     buf[j] -= 1
     print buf[2]
     stdlib.free(buf)
+
+cdef class A:
+    cdef attr
+    cdef int attr2
+    cdef char* buf
+    def __init__(self):
+        self.attr = 3
+        self.attr2 = 3
+
+class B:
+    attr = 3
+
+def attributes():
+    cdef A a = A()
+    b = B()
+    a.attr += 10
+    a.attr *= 2
+    a.attr2 += 10
+    a.attr2 *= 2
+    b.attr += 10
+    b.attr *= 2
+    print a.attr, a.attr2, b.attr
+
+def get_2(): return 2
+cdef int identity(int value): return value
+
+def smoketest():
+    cdef char* buf = <char*>stdlib.malloc(10)
+    cdef A a = A()
+    a.buf = buf
+    a.buf[identity(1)] = 0
+    (a.buf + identity(4) - <int>(2*get_2() - 1))[get_2() - 2*identity(1)] += 10
+    print a.buf[1]
+    stdlib.free(buf)
+