Hi Iain,
> Rainer Orth <r...@cebitec.uni-bielefeld.de> wrote:
>
>> Hi Joseph,
>>
>>> On Wed, 9 Oct 2019, Rainer Orth wrote:
>>>
>>>> the new test FAILs on Solaris/x86, both 32 and 64-bit:
>>>>
>>>> FAIL: gcc.dg/torture/builtin-fp-int-inexact-c2x.c -O0 execution test
>>>> FAIL: gcc.dg/torture/builtin-fp-int-inexact-c2x.c -O1 execution test
>>>> FAIL: gcc.dg/torture/builtin-fp-int-inexact-c2x.c -O2 execution test
>>>> FAIL: gcc.dg/torture/builtin-fp-int-inexact-c2x.c -O2 -flto
>>>> execution test
>>>> FAIL: gcc.dg/torture/builtin-fp-int-inexact-c2x.c -O2 -flto
>>>> -flto-partition=none execution test
>>>> FAIL: gcc.dg/torture/builtin-fp-int-inexact-c2x.c -O3 -g execution
>>>> test
>>>>
>>>> The test aborts. This happens because dg-add-options c99_runtime
>>>> appends -std=c99 to the options, yielding -std=c2x -std=c99. If I
>>>> manually omit the -std=c99, the test PASSes. I'm uncertain yet how to
>>>> handle this. Maybe prepending -std=c99 is an option, but that may well
>>>> break other tests...
>>>
>>> Since the default standard is now gnu11, I'd hope that dg-add-options
>>> c99_runtime doesn't actually need to add any options at all. (Unless
>>> there are tests using it with an explicit pre-C99 standard, which would
>>> seem rather nonsensical.)
>>
>> sometimes one misses the obvious ;-) I'll give the Solaris bootstrap a
>> try with the Solaris handling in add_options_for_c99_runtime removed.
>>
>> No idea about Darwin/PowerPC though.
>
> Right now, anything < 10.4 is not a viable host (without jumping through
> a lot of hoops, regardless of the c99 requirements)...
>
> … but It would be good to continue to support these earlier versions as
> cross-
> targets (however, it’s low on my priority list to do any serious lifting
> there).
ok, good to know.
>> If pre-10.3 is supposed to be
>> supported, the -mmacosx-version-min=10.3 probably needs to go into
>> rs6000/darwin.h first. Iain?
>
> I’m not quite sure what you’re proposing here (probably missing something
> obvious).
At the moment, gcc/testsuite/lib/target-supports.exp
(add_options_for_c99_runtime) adds -mmacosx-version-min=10.3 to the
testcase flags on powerpc-*-darwin*. Since, as Joseph mentioned, gcc
now defaults to -std=gnu11 (which implies a C99 runtime), this (or
something similar) would always be needed now (unless someone forces,
say, -std=c90) and should be handled in the Darwin/PowerPC driver code,
not just the testsuite.
Rainer
--
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Rainer Orth, Center for Biotechnology, Bielefeld University
