Re: [PATCH] Remove maybe_encapsulate_block

["Steven Bosscher" <stevenb dot gcc at gmail dot com>]

On Sat, May 31, 2008 at 8:50 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
> Hi Steven,
>
> I think this patch caused
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36398
>
> You can reproduce it on Linux/x86-64 with -m32.

This is -ftrapv suddenly working as expected.  I.e. it is actually
"fixing" the test case, instead of breaking it.

The reason is that -ftrapv is broken, see:
http://gcc.gnu.org/PR19020. See also:
http://gcc.gnu.org/ml/gcc/2008-03/msg00000.html
http://gcc.gnu.org/ml/gcc/2008-03/msg00006.html
...and the long thread that followed.

I shouldn't have overlooked this in my testing, though. Sorry for that.

I suggest we XFAIL the test case for now, until someone fixes -ftrapv.

Gr.
Steven

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