fhdl: fix value_bv for operators

diff --git a/migen/fhdl/tools.py b/migen/fhdl/tools.py
index d27f23bb06184ea83b2c727c43f4f5e277a84a11..a753d85e68d1630d5bce5ac768c715f109cd970b 100644 (file)
--- a/migen/fhdl/tools.py
+++ b/migen/fhdl/tools.py
@@ -132,7 +132,7 @@ def value_bv(v):
        elif isinstance(v, Signal):
                return v.bv
        elif isinstance(v, _Operator):
-               obv = map(value_bv, v.operands)
+               obv = list(map(value_bv, v.operands))
                if v.op == "+" or v.op == "-":
                        return BV(max(obv[0].width, obv[1].width) + 1,
                                obv[0].signed and obv[1].signed)