disallow parameter substitution for named IIFEs (#1596)

Self-referenced function has non-fixed values assigned to its parameters. Let `unused` & `!keep_fnames` do the scanning, then apply `reduce_vars` only to unnamed functions. fixes #1595
2017-03-11 03:34:55 +08:00
parent be80f7e706
commit d9344f30b8
2 changed files with 76 additions and 0 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -279,6 +279,7 @@ merge(Compressor.prototype, {
                }
                var iife;
                if (node instanceof AST_Function
+                    && !node.name
                    && (iife = tw.parent()) instanceof AST_Call
                    && iife.expression === node) {
                    // Virtually turn IIFE parameters into variable definitions: