enhance `unsafe_proto` (#2733)

2 files changed, 22 insertions, 0 deletions

diff --git a/lib/compress.js b/lib/compress.js
index 7f33b53b..0f15eb7e 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -5484,11 +5484,27 @@ merge(Compressor.prototype, {
                     elements: []
                 });
                 break;
+              case "Function":
+                self.expression = make_node(AST_Function, self.expression, {
+                    argnames: [],
+                    body: []
+                });
+                break;
+              case "Number":
+                self.expression = make_node(AST_Number, self.expression, {
+                    value: 0
+                });
+                break;
               case "Object":
                 self.expression = make_node(AST_Object, self.expression, {
                     properties: []
                 });
                 break;
+              case "RegExp":
+                self.expression = make_node(AST_RegExp, self.expression, {
+                    value: /t/
+                });
+                break;
               case "String":
                 self.expression = make_node(AST_String, self.expression, {
                     value: ""
diff --git a/test/compress/properties.js b/test/compress/properties.js
index 16374ef8..b2ce5f61 100644
--- a/test/compress/properties.js
+++ b/test/compress/properties.js
@@ -567,12 +567,18 @@ native_prototype: {
     }
     input: {
         Array.prototype.splice.apply(a, [1, 2, b, c]);
+        Function.prototype.call.apply(console.log, console, [ "foo" ]);
+        Number.prototype.toFixed.call(Math.PI, 2);
         Object.prototype.hasOwnProperty.call(d, "foo");
+        RegExp.prototype.test.call(/foo/, "bar");
         String.prototype.indexOf.call(e, "bar");
     }
     expect: {
         [].splice.apply(a, [1, 2, b, c]);
+        (function() {}).call.apply(console.log, console, [ "foo" ]);
+        0..toFixed.call(Math.PI, 2);
         ({}).hasOwnProperty.call(d, "foo");
+        /t/.test.call(/foo/, "bar");
         "".indexOf.call(e, "bar");
     }
 }