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diff --git a/src/3rdparty/masm/yarr/YarrErrorCode.h b/src/3rdparty/masm/yarr/YarrErrorCode.h
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+++ b/src/3rdparty/masm/yarr/YarrErrorCode.h
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+/*
+ * Copyright (C) 2017 Yusuke Suzuki <utatane.tea@gmail.com>.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+namespace JSC {
+
+class ExecState;
+class JSObject;
+
+namespace Yarr {
+
+enum class ErrorCode : uint8_t {
+    NoError = 0,
+    PatternTooLarge,
+    QuantifierOutOfOrder,
+    QuantifierWithoutAtom,
+    QuantifierTooLarge,
+    MissingParentheses,
+    ParenthesesUnmatched,
+    ParenthesesTypeInvalid,
+    InvalidGroupName,
+    DuplicateGroupName,
+    CharacterClassUnmatched,
+    CharacterClassOutOfOrder,
+    EscapeUnterminated,
+    InvalidUnicodeEscape,
+    InvalidBackreference,
+    InvalidIdentityEscape,
+    InvalidUnicodePropertyExpression,
+    TooManyDisjunctions,
+    OffsetTooLarge,
+    InvalidRegularExpressionFlags,
+};
+
+JS_EXPORT_PRIVATE const char* errorMessage(ErrorCode);
+inline bool hasError(ErrorCode errorCode)
+{
+    return errorCode != ErrorCode::NoError;
+}
+JS_EXPORT_PRIVATE JSObject* errorToThrow(ExecState*, ErrorCode);
+
+} } // namespace JSC::Yarr