[compiler-rt] r328407 - [HWASan] Fix use-after-free.cc test on x86-64

[Aleksey Shlyapnikov via llvm-commits]

Thank you for the report and sorry for the trouble, Douglas.

Not sure what is going wrong and more details about your environment would
certainly help. The test output before FileCheck would also be helpful.

I think making that CHECK more generous will resolve the problem, like this:
 // CHECK: #0 {{.*}} in {{.*}}free {{.*}}hwasan_interceptors.cc

but I'd still like to know what causes the difference in output.

On Mon, Mar 26, 2018 at 6:25 PM, <douglas.yung at sony.com> wrote:

> Hi Alex,
>
> This test is still failing on our internal build bot which simply does a
> x86-64 linux build/test of each upstream commit. I would point you to a
> public build bot that shows the failure, but unfortunately I don't seem to
> find any. I have been able to reproduce the failure on my linux box outside
> of the bot using the same build/test commands, so it doesn't seem to be a
> problem specific to that one machine.
>
> For reference, here is the test output:
>
> /home/siadmin/jenkins/w/opensource/opensource_build/
> llvm/projects/compiler-rt/test/hwasan/TestCases/use-after-free.cc:31:12:
> error: expected string not found in input
>  // CHECK: #0 {{.*}} in free {{.*}}hwasan_interceptors.cc
>            ^
> <stdin>:9:2: note: scanning from here
>  #0 0x7fb5893a3fd8 in __interceptor_free /home/siadmin/jenkins/w/
> opensource/opensource_build/llvm/projects/compiler-rt/lib/
> hwasan/hwasan_interceptors.cc:176:3
>  ^
> <stdin>:9:110: note: possible intended match here
>  #0 0x7fb5893a3fd8 in __interceptor_free /home/siadmin/jenkins/w/
> opensource/opensource_build/llvm/projects/compiler-rt/lib/
> hwasan/hwasan_interceptors.cc:176:3
>
> Any ideas on why this might be failing? If this isn't enough, I can
> provide you with more details of my environment and the build/test command
> lines to help you reproduce the problem.
>
> Douglas Yung
>
> > -----Original Message-----
> > From: llvm-commits [mailto:llvm-commits-bounces at lists.llvm.org] On
> Behalf Of
> > Alex Shlyapnikov via llvm-commits
> > Sent: Friday, March 23, 2018 19:11
> > To: llvm-commits at lists.llvm.org
> > Subject: [compiler-rt] r328407 - [HWASan] Fix use-after-free.cc test on
> x86-64
> >
> > Author: alekseyshl
> > Date: Fri Mar 23 19:10:49 2018
> > New Revision: 328407
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=328407&view=rev
> > Log:
> > [HWASan] Fix use-after-free.cc test on x86-64
> >
> > Differential Revision: https://reviews.llvm.org/D44705
> >
> > Modified:
> >     compiler-rt/trunk/test/hwasan/TestCases/use-after-free.cc
> >
> > Modified: compiler-rt/trunk/test/hwasan/TestCases/use-after-free.cc
> > URL: http://llvm.org/viewvc/llvm-project/compiler-
> > rt/trunk/test/hwasan/TestCases/use-after-
> > free.cc?rev=328407&r1=328406&r2=328407&view=diff
> > ============================================================
> ==================
> > --- compiler-rt/trunk/test/hwasan/TestCases/use-after-free.cc (original)
> > +++ compiler-rt/trunk/test/hwasan/TestCases/use-after-free.cc Fri Mar 23
> > 19:10:49 2018
> > @@ -32,7 +32,7 @@ int main() {
> >    // CHECK: #1 {{.*}} in main {{.*}}use-after-free.cc:16
> >
> >    // CHECK: previously allocated here:
> > -  // CHECK: #0 {{.*}} in __interceptor_malloc
> {{.*}}hwasan_interceptors.cc
> > +  // CHECK: #0 {{.*}} in {{.*}}malloc {{.*}}hwasan_interceptors.cc
> >    // CHECK: #1 {{.*}} in main {{.*}}use-after-free.cc:15
> >
> >    // CHECK: SUMMARY: HWAddressSanitizer: tag-mismatch {{.*}} in main
> >
> >
> > _______________________________________________
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> > llvm-commits at lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>
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