[cfe-dev] Build failing when configured with gcc 4.5.0

[Douglas Gregor]

Sent from my iPhone

On Jul 25, 2010, at 11:57 AM, Clark Gaebel <cg.wowus.cg at gmail.com> wrote:

> Thanks.
> 
> Any plans on clang getting experimental C++0x support?

Eventually, yes. But not until C++98 support is solid. 

> By looking at the
> webpage it seems that the only thing stopping the amazing r-value
> references from being used is CodeGen.

There is more work to be done there, too. I will fix the web page. 

> On 07/25/10 14:16, Douglas Gregor wrote:
>> On Jul 25, 2010, at 9:52 AM, Clark Gaebel wrote:
>> 
>> 
>>> Clang stopped being able to compile iomanip when I configured it with
>>> gcc 4.5.0's system headers.
>>> 
>>> Full usage below:
>>> 
>>> clark at clark-server /tmp $ g++ --version
>>> g++ (Gentoo 4.5.0 p1.2, pie-0.4.5) 4.5.0
>>> Copyright (C) 2010 Free Software Foundation, Inc.
>>> This is free software; see the source for copying conditions.  There is NO
>>> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>>> 
>>> clark at clark-server /tmp $ clang++ --version
>>> clang version 1.1 (branches/release_27)
>>> Target: x86_64-pc-linux-gnu
>>> Thread model: posix
>>> clark at clark-server /tmp $ cat t.cpp
>>> #include <iomanip>
>>> 
>>> int main()
>>> {
>>>       return 0;
>>> }
>>> clark at clark-server /tmp $ clang++ t.cpp
>>> In file included from t.cpp:1:
>>> /usr/lib/gcc/x86_64-pc-linux-gnu/4.5.0/include/g++-v4/iomanip:63:12:
>>> error: expected expression
>>> { return { __mask }; }
>>> 
>>> ^                                                                                                                                                
>>> 
>> This is not surprising, unfortunately. GCC 4.5.0's headers use various C++0x features---in this case, generalized initializer lists---that Clang does not implement.
>> 
>>    - Doug
> 
> -- 
> Regards,
> -Clark
>