retrofit AST_BlockStatement as block-scoped (#4177)

2020-10-04 18:58:50 +01:00
parent 58ac5b9bd5
commit f9946767c9
6 changed files with 104 additions and 59 deletions
--- a/test/compress/drop-unused.js
+++ b/test/compress/drop-unused.js
@@ -2993,6 +2993,38 @@ issue_4146: {
    expect_stdout: "function"
 }

+var_catch_redefined: {
+    options = {
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var a = "FAIL";
+        try {
+            throw "PASS";
+        } catch (a) {
+            function f() {
+                return a;
+            }
+            console.log(a);
+        }
+        f();
+    }
+    expect: {
+        var a = "FAIL";
+        try {
+            throw "PASS";
+        } catch (a) {
+            function f() {
+                return a;
+            }
+            console.log(a);
+        }
+        f();
+    }
+    expect_stdout: "PASS"
+}
+
 single_use_catch_redefined: {
    options = {
        reduce_vars: true,