Fix Python 3.x pringing superclasses...

class Description: not class Description("Description").
Introduced in not catching LOAD_CONST->LOAD_STR change

test/simple_source/def/05_class.py

@@ -15,3 +15,11 @@ class BZ2File(io.BufferedIOBase):
 
 class ABC(metaclass=BZ2File):
     pass
+
+# From 3.3 test_abc
+
+# Bug was class Descriptor("Descriptor"): instead of below
+def test_customdescriptors_with_abstractmethod():
+    class Descriptor:
+        def setter(self):
+            return Descriptor(self._fget)

test/stdlib/runtests.sh

@@ -26,7 +26,7 @@ FULLVERSION=$(pyenv local)
 PYVERSION=${FULLVERSION%.*}
 MINOR=${FULLVERSION##?.?.}
 
-typeset -i STOP_ONERROR=1
+STOP_ONERROR=${STOP_ONERROR:-1}
 
 typeset -A SKIP_TESTS
 case $PYVERSION in

uncompyle6/semantics/pysource.py

@@ -1630,7 +1630,7 @@ class SourceWalker(GenericASTTraversal, object):
                     pass
             pass
         else:
-            if self.version >= 3.6 and node[0] == "LOAD_CONST":
+            if node[0] == "LOAD_STR":
                 return
             value = self.traverse(node[0])
             self.write("(")