Author: Maciej Fijalkowski <[email protected]>
Branch: jitframe-on-heap
Changeset: r60585:540d7e169bac
Date: 2013-01-28 10:48 +0200
http://bitbucket.org/pypy/pypy/changeset/540d7e169bac/
Log: some extra security
diff --git a/rpython/jit/backend/x86/assembler.py
b/rpython/jit/backend/x86/assembler.py
--- a/rpython/jit/backend/x86/assembler.py
+++ b/rpython/jit/backend/x86/assembler.py
@@ -2271,7 +2271,9 @@
else:
raise AssertionError(kind)
- value = rffi.cast(lltype.Signed, cast_instance_to_gcref(value))
+ gcref = cast_instance_to_gcref(value)
+ rgc._make_sure_does_not_move(gcref)
+ value = rffi.cast(lltype.Signed, gcref)
base_ofs = self.cpu.get_baseofs_of_frame_field()
ofs = self.cpu.get_ofs_of_frame_field('jf_descr')
self.mc.CMP_mi((eax.value, base_ofs + ofs), value)
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