r345660 - [clang][ubsan] Implicit Conversion Sanitizer - integer sign change - clang part

[Roman Lebedev via cfe-commits]

On Thu, Nov 1, 2018 at 3:03 AM Friedman, Eli <efriedma at codeaurora.org> wrote:
>
> On 10/30/2018 2:58 PM, Roman Lebedev via cfe-commits wrote:
> > Author: lebedevri
> > Date: Tue Oct 30 14:58:56 2018
> > New Revision: 345660
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=345660&view=rev
> > Log:
> > [clang][ubsan] Implicit Conversion Sanitizer - integer sign change - clang part
> >
> > This is the second half of Implicit Integer Conversion Sanitizer.
> > It completes the first half, and finally makes the sanitizer
> > fully functional! Only the bitfield handling is missing.
>
> This is causing failures on the polly-aosp buildbot
> (http://lab.llvm.org:8011/builders/aosp-O3-polly-before-vectorizer-unprofitable/builds/690/steps/build-aosp/logs/stdio
> ).  I haven't tried to reduce the issue yet; let me know if you need help.
Thanks!
I'm able to cause a similar crash, will handle it from here.
It *should* be trivial/fast to triage, so maybe the revert can be
avoided. Or not.

> -Eli
Roman.

> --
> Employee of Qualcomm Innovation Center, Inc.
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
>