Armin Rigo avatar Armin Rigo committed 324d50d

Test and fix (baaa*a*a*ah, took too long): IR_QUASIIMMUTABLE fields
must of course not be considered as fully immutable fields!

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Files changed (3)


             if t._hints.get('immutable'):
             if 'immutable_fields' in t._hints:
-                skip = t._hints['immutable_fields'].fields
+                skip = t._hints['immutable_fields'].all_immutable_fields()
         for n, t2 in t._flds.iteritems():
             if isinstance(t2, lltype.Ptr) and t2.TO._gckind == 'gc':
                 if n not in skip:


 from pypy.rpython.memory.gctypelayout import gc_pointers_inside
 from pypy.rpython.lltypesystem import lltype, llmemory, rclass
 from pypy.rpython.test.test_llinterp import get_interpreter
-from pypy.rpython.rclass import IR_IMMUTABLE
+from pypy.rpython.rclass import IR_IMMUTABLE, IR_QUASIIMMUTABLE
 from pypy.objspace.flow.model import Constant
 class FakeGC:
     accessor = rclass.FieldListAccessor()
     S3 = lltype.GcStruct('S', ('x', PT), ('y', PT),
                          hints={'immutable_fields': accessor})
-    accessor.initialize(S3, {'x': IR_IMMUTABLE})
+    accessor.initialize(S3, {'x': IR_IMMUTABLE, 'y': IR_QUASIIMMUTABLE})
     s1 = lltype.malloc(S1)
     adr = llmemory.cast_ptr_to_adr(s1)


         for x in fields.itervalues():
             assert isinstance(x, ImmutableRanking)
+    def all_immutable_fields(self):
+        result = set()
+        for key, value in self.fields.iteritems():
+            if value in (IR_IMMUTABLE, IR_IMMUTABLE_ARRAY):
+                result.add(key)
+        return result
     def __repr__(self):
         return '<FieldListAccessor for %s>' % getattr(self, 'TYPE', '?')
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