fix side-effects detection on switch statements (#1678)

extension of #1675
2017-03-26 12:05:44 +08:00
parent adb0e882e9
commit 8a4f86528f
2 changed files with 36 additions and 0 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1610,6 +1610,10 @@ merge(Compressor.prototype, {
        def(AST_Block, function(compressor){
            return any(this.body, compressor);
        });
+        def(AST_Case, function(compressor){
+            return any(this.body, compressor)
+                || this.expression.has_side_effects(compressor);
+        });
        def(AST_Try, function(compressor){
            return any(this.body, compressor)
                || this.bcatch && this.bcatch.has_side_effects(compressor)