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-rw-r--r--miasm/core/cpu.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/miasm/core/cpu.py b/miasm/core/cpu.py
index ec8d95bc..aee22c97 100644
--- a/miasm/core/cpu.py
+++ b/miasm/core/cpu.py
@@ -1589,6 +1589,9 @@ class imm_noarg(object):
 
         assert(m2_expr.is_expr(e))
         self.expr = e
+        if self.expr is None:
+            log.debug('cannot fromstring int %r', text)
+            return None, None
         return start, stop
 
     def decodeval(self, v):