fix corner case in `inline` (#5088)

fixes #5087

2 files changed, 62 insertions, 1 deletions

diff --git a/lib/compress.js b/lib/compress.js
index 0de072ad..c5d75d42 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -9957,8 +9957,10 @@ merge(Compressor.prototype, {
             }));
 
             function process(ref, name) {
+                var def = name.definition();
+                def.references.push(ref);
                 var symbol = make_node(AST_SymbolVar, name, name);
-                name.definition().orig.push(symbol);
+                def.orig.push(symbol);
                 append_var(decls, expressions, symbol);
             }
         }
diff --git a/test/compress/destructured.js b/test/compress/destructured.js
index 4ba32f3e..879e9529 100644
--- a/test/compress/destructured.js
+++ b/test/compress/destructured.js
@@ -2998,3 +2998,62 @@ issue_5085_2: {
     expect_stdout: "PASS"
     node_version: ">=6"
 }
+
+issue_5087_1: {
+    options = {
+        collapse_vars: true,
+        inline: true,
+        properties: true,
+        sequences: true,
+        side_effects: true,
+        unused: true,
+    }
+    input: {
+        var a = "PASS";
+        (function() {
+            (function() {
+                (function([ b ]) {
+                    b && console.log(b);
+                })([ a ]);
+            })();
+        })();
+    }
+    expect: {
+        var a = "PASS";
+        (function() {
+            var b;
+            (b = a) && console.log(b);
+        })();
+    }
+    expect_stdout: "PASS"
+    node_version: ">=6"
+}
+
+issue_5087_2: {
+    options = {
+        collapse_vars: true,
+        inline: true,
+        passes: 2,
+        properties: true,
+        reduce_vars: true,
+        sequences: true,
+        side_effects: true,
+        unused: true,
+    }
+    input: {
+        var a = "PASS";
+        (function() {
+            (function() {
+                (function([ b ]) {
+                    b && console.log(b);
+                })([ a ]);
+            })();
+        })();
+    }
+    expect: {
+        var a = "PASS";
+        a && console.log(a);
+    }
+    expect_stdout: "PASS"
+    node_version: ">=6"
+}