From: Alex Lam S.L <alexlamsl@gmail.com>
Date: Sun, 1 Mar 2020 20:34:31 +0000 (+0000)
Subject: fix corner case in `evaluate` (#3739)
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=a051846d2275de75c72b69063a6b75ee0d302a8c;p=UglifyJS.git

fix corner case in `evaluate` (#3739)

fixes #3738
---

diff --git a/lib/compress.js b/lib/compress.js
index e455ea8d..ab89e927 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -2528,9 +2528,8 @@ merge(Compressor.prototype, {
                 return left.is_negative_zero() || right.is_negative_zero();
               case "*":
               case "/":
-                return true;
               case "%":
-                return left.is_negative_zero();
+                return true;
               default:
                 return false;
             }
diff --git a/test/compress/evaluate.js b/test/compress/evaluate.js
index 09fdfb2a..6d3adacb 100644
--- a/test/compress/evaluate.js
+++ b/test/compress/evaluate.js
@@ -2161,3 +2161,16 @@ collapse_vars_regexp: {
         "abbb",
     ]
 }
+
+issue_3738: {
+    options = {
+        evaluate: true,
+    }
+    input: {
+        console.log(1 / (0 + ([] - 1) % 1));
+    }
+    expect: {
+        console.log(1 / (0 + ([] - 1) % 1));
+    }
+    expect_stdout: "Infinity"
+}