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-rw-r--r--miasm2/core/cpu.py10
1 files changed, 5 insertions, 5 deletions
diff --git a/miasm2/core/cpu.py b/miasm2/core/cpu.py
index f2c4c3b4..48f7e26e 100644
--- a/miasm2/core/cpu.py
+++ b/miasm2/core/cpu.py
@@ -1020,11 +1020,7 @@ class cls_mn(object):
                 else:
                     todo.append((dict(fname_values), (nb, v), offset_b))
 
-        candidates = [c for c in candidates]
-
-        if not candidates:
-            raise Disasm_Exception('cannot disasm (guess) at %X' % offset)
-        return candidates
+        return [c for c in candidates]
 
     def reset_class(self):
         for f in self.fields_order:
@@ -1099,6 +1095,10 @@ class cls_mn(object):
         pre_dis_info, bs, mode, offset, prefix_len = cls.pre_dis(
             bs_o, mode_o, offset)
         candidates = cls.guess_mnemo(bs, mode, pre_dis_info, offset)
+        if not candidates:
+            bs_o.leave_atomic_mode()
+            raise Disasm_Exception('cannot disasm (guess) at %X' % offset)
+
         out = []
         out_c = []
         if hasattr(bs, 'getlen'):