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Differential D95435

[clang][aarch64][WOA64][docs] Release note for longjmp crash with /guard:cf
AbandonedPublic

Authored by peterwaller-arm on Jan 26 2021, 3:59 AM.

Details

Reviewers
richard.townsend.arm
tstellar
Summary

Add a release note workaround for PR47463.

Bug: https://bugs.llvm.org/show_bug.cgi?id=47463

Diff Detail

Event Timeline

peterwaller-arm created this revision.Jan 26 2021, 3:59 AM
Herald added subscribers: danielkiss, kristof.beyls. · View Herald TranscriptJan 26 2021, 3:59 AM
peterwaller-arm requested review of this revision.Jan 26 2021, 3:59 AM
Herald added a project: Restricted Project. · View Herald TranscriptJan 26 2021, 3:59 AM
Herald added a subscriber: cfe-commits. · View Herald Transcript
Harbormaster completed remote builds in B86695: Diff 319265.Jan 26 2021, 4:36 AM
peterwaller-arm added a reviewer: tstellar.Jan 28 2021, 3:48 AM
peterwaller-arm abandoned this revision.Feb 8 2021, 2:12 AM

Release note upstream on release/12.x branch in rGbc2dad1671598a87423c61c355d03db49ce76907.

Revision Contents

PathSize
clang/
docs/
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Diff 319265

clang/docs/ReleaseNotes.rst

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- Added support for the C++20 likelihood attributes ``[[likely]]`` and - Added support for the C++20 likelihood attributes ``[[likely]]`` and
``[[unlikely]]``. As an extension they can be used in C++11 and newer. ``[[unlikely]]``. As an extension they can be used in C++11 and newer.
This extension is enabled by default. This extension is enabled by default.
Windows Support Windows Support
--------------- ---------------
- Windows on Arm64: programs using the C standard library's setjmp and longjmp
functions may crash with a "Security check failure or stack buffer overrun"
exception. To workaround (with reduced security), compile with
/guard:cf,nolongjmp.
C Language Changes in Clang C Language Changes in Clang
--------------------------- ---------------------------
- ... - ...
C++ Language Changes in Clang C++ Language Changes in Clang
----------------------------- -----------------------------
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