From b95e3338d9704927046a030fe814302f55737e0d Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Thu, 28 Dec 2017 17:01:01 +0800
Subject: [PATCH] fix `pure_getters` on `AST_Binary` (#2681)

fixes #2678
---
 lib/compress.js               | 11 ++---------
 test/compress/pure_getters.js | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 9 deletions(-)

diff --git a/lib/compress.js b/lib/compress.js
index ac5cd235..4e3a8f82 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1693,15 +1693,8 @@ merge(Compressor.prototype, {
             return this.operator == "void";
         });
         def(AST_Binary, function(compressor) {
-            switch (this.operator) {
-              case "&&":
-                return this.left._dot_throw(compressor);
-              case "||":
-                return this.left._dot_throw(compressor)
-                    && this.right._dot_throw(compressor);
-              default:
-                return false;
-            }
+            return (this.operator == "&&" || this.operator == "||")
+                && (this.left._dot_throw(compressor) || this.right._dot_throw(compressor));
         })
         def(AST_Assign, function(compressor) {
             return this.operator == "="
diff --git a/test/compress/pure_getters.js b/test/compress/pure_getters.js
index 4174bc1b..7185e0c6 100644
--- a/test/compress/pure_getters.js
+++ b/test/compress/pure_getters.js
@@ -611,3 +611,35 @@ issue_2313_6: {
         x();
     }
 }
+
+issue_2678: {
+    options = {
+        pure_getters: "strict",
+        side_effects: true,
+    }
+    input: {
+        var a = 1, c = "FAIL";
+        (function f() {
+            (a-- && f()).p;
+            return {
+                get p() {
+                    c = "PASS";
+                }
+            };
+        })();
+        console.log(c);
+    }
+    expect: {
+        var a = 1, c = "FAIL";
+        (function f() {
+            (a-- && f()).p;
+            return {
+                get p() {
+                    c = "PASS";
+                }
+            };
+        })();
+        console.log(c);
+    }
+    expect_stdout: "PASS"
+}
-- 
2.34.1