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-rw-r--r--frontends/ast/simplify.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc
index 982d1ae3..9b8ed760 100644
--- a/frontends/ast/simplify.cc
+++ b/frontends/ast/simplify.cc
@@ -497,8 +497,9 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
if (width != int(children[0]->bits.size())) {
RTLIL::SigSpec sig(children[0]->bits);
sig.extend_u0(width, children[0]->is_signed);
- delete children[0];
+ AstNode *old_child_0 = children[0];
children[0] = mkconst_bits(sig.as_const().bits, children[0]->is_signed);
+ delete old_child_0;
}
children[0]->is_signed = is_signed;
}