fix corner case in arguments (#3939)

2020-05-31 05:18:27 +01:00
parent 0eb4577a82
commit 06ba4e2ce8
2 changed files with 45 additions and 37 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -8322,7 +8322,8 @@ merge(Compressor.prototype, {
            var argname = fn.argnames[index];
            if (def.deleted && def.deleted[index]) {
                argname = null;
-            } else if (argname && compressor.has_directive("use strict")) {
+            } else if (argname && (compressor.has_directive("use strict")
+                || !(fn_parent instanceof AST_Call && index < fn_parent.args.length))) {
                var arg_def = argname.definition();
                if (!compressor.option("reduce_vars")
                    || def.reassigned