v8/test/mjsunit/regress/regress-1262423.js

// Copyright 2021 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.
//
// Flags: --no-regexp-tier-up

assertNull(/[B\p{S}\p{C}]/iu.exec(""));
[regexp] Only emit valid ranges in MakeRangeArray Character class handling in the irregexp pipeline is quite complex; codepoints outside the BMP (basic multilingual plane) are only translated into surrogate pairs when needed, e.g. when the subject string is two-byte. If not needed, the codepoints simply stay part of the list of CharacterRanges. In EmitCharClass, we determine the valid subset of ranges through ranges_length; until this CL, we forgot to pass that information on to MakeRangeArray. Do that now by truncating the list of CharacterRanges. Fixed: chromium:1262423 Change-Id: I5bb5b839e9935890ca2d10908ad66d72c3217178 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3240782 Commit-Queue: Jakob Gruber <jgruber@chromium.org> Auto-Submit: Jakob Gruber <jgruber@chromium.org> Reviewed-by: Mathias Bynens <mathias@chromium.org> Cr-Commit-Position: refs/heads/main@{#77514} 2021-10-25 08:52:20 +00:00			`// Copyright 2021 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.`
			`//`
			`// Flags: --no-regexp-tier-up`

			`assertNull(/[B\p{S}\p{C}]/iu.exec(""));`