Re: [boost] [array] failures in c++11 mode

Subject: Re: [boost] [array] failures in c++11 mode
From: Marshall Clow (mclow.lists_at_[hidden])
Date: 2013-02-15 12:12:28

On Feb 15, 2013, at 7:39 AM, Marshall Clow <mclow.lists_at_[hidden]> wrote:

> 
> On Feb 15, 2013, at 5:24 AM, John Maddock <boost.regex_at_[hidden]> wrote:
> 
>>> I have built gcc 4.7.2 and run the array tests.
>>> I see the failure that you reported.
>>> I also see a gcc crash in the test "array_constexpr":
>>> 
>>> darwin.compile.c++ ../../../bin.v2/libs/array/test/array_constexpr.test/darwin-11/debug/array_constexpr.o
>>> array_constexpr.cpp: In member function 'void test_main::test_method()':
>>> array_constexpr.cpp:32:36:   in constexpr expansion of 'arr.boost::array<T, N>::at<int, 10ul>(3ul)'
>>> array_constexpr.cpp:32:36: internal compiler error: in adjust_temp_type, at cp/semantics.c:6400
>>> Please submit a full bug report,
>>> with preprocessed source if appropriate.
>>> See <http://gcc.gnu.org/bugs.html> for instructions.
>>> 
>>> More as I find it out. ;-)
>> 
>> Just so you know, this is causing all the C++0x mode Boost.Math tests to fail currently.
>> 
>> Tricky one to solve though :-(
> 
> I spoke to Johnathan Wakely about this yesterday, and he said:
> 
>>>> 
>>>> I can't reproduce this crash.
>>> 
>>> (Partially) reduced test case attached.  (Still needs parts of boost)
>> 
>> Ah yes, that crashes with GCC 4.7.2, but not with the pre-release
>> 4.7.3 or with trunk - I'm pretty sure it's this bug I reported and the
>> code is valid:
>> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53839
> 
> That's the good news.
> The bad news is that no released version of gcc compiles it.

Reverted the offending bits in [82906]

-- Marshall

Marshall Clow     Idio Software   <mailto:mclow.lists_at_[hidden]>

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