[boost] [lexical_cast][random] ADL problem with gcc c++11
Joel de Guzman
I can't get this to compile on gcc-4.6.1 with -std=c++0x flag:
#include <boost/random.hpp>
int main()
{
return 0;
}
I'm getting an error in lexical_cast:
C:\dev\boost/boost/lexical_cast.hpp:1323:120: error: there are no arguments to 'swprintf'
that depend on a template parameter, so a declaration of 'swprintf' must be available
[-fpermissive]
Obviously, I can compile with -fpermissive, but I'd like to report this anyway.
Regards,
--
Joel de Guzman
http://www.boostpro.com
http://boost-spirit.com
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Antony Polukhin
> Hi,
>
> I can't get this to compile on gcc-4.6.1 with -std=c++0x flag:
>
> #include <boost/random.hpp>
>
> int main()
> {
> return 0;
> }
>
> I'm getting an error in lexical_cast:
Could not reproduce it with trunk version and gcc-4.6.1-9ubuntu3.
Which version of boost are you using?
--
Best regards,
Antony Polukhin
Joel de Guzman
> 2012/3/19 Joel de Guzman <jo...@boost-consulting.com>:
>> Hi,
>>
>> I can't get this to compile on gcc-4.6.1 with -std=c++0x flag:
>>
>> #include <boost/random.hpp>
>>
>> int main()
>> {
>> return 0;
>> }
>>
>> I'm getting an error in lexical_cast:
>
> Could not reproduce it with trunk version and gcc-4.6.1-9ubuntu3.
> Which version of boost are you using?
I tested both trunk and release branches + the 1.49.0 release.
All fail.
I'm on Windows using gcc-4.6.1 mingw. I typically test using
BJam. I also test using the gcc compiler directly with these
flags:
-Wall -mconsole -ftemplate-depth-512 -DNDEBUG -DNDEBUG
-O3 -finline-functions -funroll-loops -Wfatal-errors
-std=c++0x -static-libgcc -static-libstdc++
==========================================================================
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=c:/dev/tools/mingw/bin/../libexec/gcc/mingw32/
4.6.1/lto-wrapper.exe
Target: mingw32
Configured with: ../gcc-4.6.1/configure --enable-languages=c,c++,
fortran,objc,obj-c++ --disable-sjlj-exceptions --with-dwarf2
--enable-shared --enable-libgomp --disable-win32-registry
--enable-libstdcxx-debug --enable-version-specific-runtime-libs
--build=mingw32 --prefix=/mingw
Thread model: win32
gcc version 4.6.1 (GCC)
==========================================================================
Regards,
--
Joel de Guzman
http://www.boostpro.com
http://boost-spirit.com
Marshall Clow
Very strange.
I pasted your code into a file, and tried it on my Mac.
I used trunk and release branches, gcc 4.2.1 and clang (from svn).
All succeeded.
Sample command:
$ clang++ -I /Volumes/EyeFive/Marshall/Sources/boost/release junk.cpp
$
-- Marshall
Olaf van der Spek
> Very strange.
> I pasted your code into a file, and tried it on my Mac.
> I used trunk and release branches, gcc 4.2.1 and clang (from svn).
>
> All succeeded.
Looks like it's a known and mingw specific issue.
https://svn.boost.org/trac/boost/ticket/6252
--
Olaf
Antony Polukhin
> On Tue, Mar 20, 2012 at 12:22 AM, Marshall Clow <mclow...@gmail.com> wrote:
>> Very strange.
>> I pasted your code into a file, and tried it on my Mac.
>> I used trunk and release branches, gcc 4.2.1 and clang (from svn).
>>
>> All succeeded.
>
> Looks like it's a known and mingw specific issue.
Created ticket #6717.
I'll fix it after dealing with iterator_range<> optimizations.
--
Best regards,
Antony Polukhin
_______________________________________________
Mathias Gaunard
> Very strange.
> I pasted your code into a file, and tried it on my Mac.
> I used trunk and release branches, gcc 4.2.1 and clang (from svn).
The bug only appears when the compiler is very strict about name lookups
in template contexts.
GCC 4.6+ is stricter than 4.2.
This particular bug is a missing include, which may be windows-specific.
Marshall Clow
> On 20/03/12 00:22, Marshall Clow wrote:
>
>> Very strange.
>> I pasted your code into a file, and tried it on my Mac.
>> I used trunk and release branches, gcc 4.2.1 and clang (from svn).
>
> The bug only appears when the compiler is very strict about name lookups in template contexts.
>
> GCC 4.6+ is stricter than 4.2.
Yes, and clang is (usually) stricter than gcc.
> This particular bug is a missing include, which may be windows-specific.
That would explain why I didn't see it.
-- Marshall
Marshall Clow Idio Software <mailto:mclow...@gmail.com>
A.D. 1517: Martin Luther nails his 95 Theses to the church door and is promptly moderated down to (-1, Flamebait).
-- Yu Suzuki