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+// |reftest| error:Test262Error
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-html-like-comments
+description: SingleLineHTMLOpenComment
+info: |
+ Comment ::
+ MultiLineComment
+ SingleLineComment
+ SingleLineHTMLOpenComment
+ SingleLineHTMLCloseComment
+ SingleLineDelimitedComment
+
+ SingleLineHTMLOpenComment ::
+ <!--SingleLineCommentCharsopt
+negative:
+ phase: runtime
+ type: Test262Error
+---*/
+
+var counter = 0;
+<!--
+counter += 1;
+
+<!--the comment extends to these characters
+counter += 1;
+
+counter += 1;<!--the comment extends to these characters
+counter += 1;
+
+var x = 0;
+x = -1 <!--x;
+
+// Because this test concerns the interpretation of non-executable character
+// sequences within ECMAScript source code, special care must be taken to
+// ensure that executable code is evaluated as expected.
+//
+// Express the intended behavior by intentionally throwing an error; this
+// guarantees that test runners will only consider the test "passing" if
+// executable sequences are correctly interpreted as such.
+if (counter === 4 && x === -1) {
+ throw new Test262Error();
+}