Fix compression of conditionals

Don't move the condition on the right side of an assignment when the left side may have side effects. Fix #677
2015-04-13 17:29:48 +03:00
parent e04ef56243
commit 18c63ff3d8
2 changed files with 13 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -2343,6 +2343,7 @@ merge(Compressor.prototype, {
            && alternative instanceof AST_Assign
            && consequent.operator == alternative.operator
            && consequent.left.equivalent_to(alternative.left)
+            && !consequent.left.has_side_effects(compressor)
           ) {
            /*
             * Stuff like this: