Merge branch 'master' into harmony

2015-08-21 11:58:35 +02:00
parent c8b82583d2 6c8db6eae1
commit 35b31bdd4e
7 changed files with 84 additions and 15 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -2308,7 +2308,15 @@ merge(Compressor.prototype, {
    });

    OPT(AST_SymbolRef, function(self, compressor){
-        if (self.undeclared()) {
+        function isLHS(symbol, parent) {
+            return (
+                parent instanceof AST_Binary &&
+                parent.operator === '=' &&
+                parent.left === symbol
+            );
+        }
+
+        if (self.undeclared() && !isLHS(self, compressor.parent())) {
            var defines = compressor.option("global_defs");
            if (defines && defines.hasOwnProperty(self.name)) {
                return make_node_from_constant(compressor, defines[self.name], self);