diff --git a/src/regexp/regexp-parser.cc b/src/regexp/regexp-parser.cc
index ef7ae24e273d..8d27289053f2 100644
--- a/src/regexp/regexp-parser.cc
+++ b/src/regexp/regexp-parser.cc
@@ -2774,6 +2774,14 @@ RegExpTree* RegExpParserImpl<CharT>::ParseClassUnion(
     return ReportError(RegExpError::kNegatedCharacterClassWithStrings);
   }
 
+  if (operands->is_empty()) {
+    // Return empty expression if no operands were added (e.g. [\P{Any}]
+    // produces an empty range).
+    DCHECK(ranges->is_empty());
+    DCHECK(strings->empty());
+    return RegExpClassSetExpression::Empty(zone(), is_negated);
+  }
+
   return zone()->template New<RegExpClassSetExpression>(
       RegExpClassSetExpression::OperationType::kUnion, is_negated,
       may_contain_strings, operands);
diff --git a/test/mjsunit/regress/regress-crbug-1437346.js b/test/mjsunit/regress/regress-crbug-1437346.js
new file mode 100644
index 000000000000..d94789c0e5fd
--- /dev/null
+++ b/test/mjsunit/regress/regress-crbug-1437346.js
@@ -0,0 +1,5 @@
+// Copyright 2023 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+assertFalse(/[\P{Any}]/v.test());