[Bug target/68137] FAIL: gcc.dg/torture/ftrapv-2.c * execution test on x86_64-apple-darwin14

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68137

--- Comment #2 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 28 Oct 2015, dominiq at lps dot ens.fr wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68137
> 
>             Bug ID: 68137
>            Summary: FAIL: gcc.dg/torture/ftrapv-2.c * execution test on
>                     x86_64-apple-darwin14
>            Product: gcc
>            Version: 6.0
>             Status: UNCONFIRMED
>           Severity: normal
>           Priority: P3
>          Component: target
>           Assignee: unassigned at gcc dot gnu.org
>           Reporter: dominiq at lps dot ens.fr
>                 CC: fxcoudert at gcc dot gnu.org,
>                     howarth.at.gcc.testresults at gmail dot com,
>                     iains at gcc dot gnu.org, rguenth at gcc dot gnu.org
>   Target Milestone: ---
> 
> Since the test has been introduced at revision r229170, I see the following
> failures on x86_64-apple-darwin14
> 
> FAIL: gcc.dg/torture/ftrapv-2.c   -O0  execution test
> FAIL: gcc.dg/torture/ftrapv-2.c   -O1  execution test
> FAIL: gcc.dg/torture/ftrapv-2.c   -O2  execution test
> FAIL: gcc.dg/torture/ftrapv-2.c   -O3 -fomit-frame-pointer -funroll-loops
> -fpeel-loops -ftracer -finline-functions  execution test
> FAIL: gcc.dg/torture/ftrapv-2.c   -O3 -g  execution test
> FAIL: gcc.dg/torture/ftrapv-2.c   -Os  execution test

can you check a simplified testcase with just

int i = 0x7fffffff;
int main()
{
      volatile int x = i + 1 < i;
}

it should abort/trap with -ftrapv.  The glue in the testcase is
to catch that trapping/aborting.  It would be nice if you can
work out why that doesnt' work (if that's the issue)