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-rw-r--r--passes/cmds/setundef.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/passes/cmds/setundef.cc b/passes/cmds/setundef.cc
index 394834a3..9d59834c 100644
--- a/passes/cmds/setundef.cc
+++ b/passes/cmds/setundef.cc
@@ -40,7 +40,7 @@ static RTLIL::State next_bit()
next_bit_state ^= next_bit_state << 5;
log_assert(next_bit_state != 0);
- return ((next_bit_state >> (next_bit_state & 15)) & 1) ? RTLIL::State::S0 : RTLIL::State::S1;
+ return ((next_bit_state >> (next_bit_state & 15)) & 16) ? RTLIL::State::S0 : RTLIL::State::S1;
}
struct SetundefWorker