diff options
| -rw-r--r-- | frontends/ast/ast.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/frontends/ast/ast.cc b/frontends/ast/ast.cc index 5044eeabc..3e163bae7 100644 --- a/frontends/ast/ast.cc +++ b/frontends/ast/ast.cc @@ -831,7 +831,7 @@ double AstNode::asReal(bool is_signed) { RTLIL::Const val(bits); - bool is_negative = is_signed && val.bits.back() == RTLIL::State::S1; + bool is_negative = is_signed && !val.bits.empty() && val.bits.back() == RTLIL::State::S1; if (is_negative) val = const_neg(val, val, false, false, val.bits.size()); |