fix corner case in `inline` (#3822)

fixes #3821

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/compress.js b/lib/compress.js
index 3d1b17f3..67884a13 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -6130,8 +6130,12 @@ merge(Compressor.prototype, {
                     return;
                 }
                 if (node instanceof AST_Scope) return abort = true;
-                var def;
-                if (node instanceof AST_SymbolRef && fn.variables.get(node.name) === (def = node.definition())) {
+                if (node instanceof AST_SymbolRef) {
+                    var def = node.definition();
+                    if (fn.variables.get(node.name) !== def) {
+                        in_order = null;
+                        return;
+                    }
                     if (def.init instanceof AST_Defun) return abort = true;
                     if (is_lhs(node, this.parent())) return abort = true;
                     var index = resolve_index(def);