fix crash in may_throw() (#2932)

fixes #2931
2018-02-18 21:51:27 +08:00
parent 2351a672ea
commit 4b5993ff15
2 changed files with 24 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -2864,7 +2864,7 @@ merge(Compressor.prototype, {
            return this.value.may_throw(compressor);
        });
        def(AST_Return, function(compressor){
-            return this.value.may_throw(compressor);
+            return this.value && this.value.may_throw(compressor);
        });
        def(AST_Sequence, function(compressor){
            return any(this.expressions, compressor);