* -m32 and int128
@ 2014-01-01 13:07 Paolo Bolzoni
2014-01-01 13:36 ` Marc Glisse
0 siblings, 1 reply; 3+ messages in thread
From: Paolo Bolzoni @ 2014-01-01 13:07 UTC (permalink / raw)
To: gcc-help
[Please put me in CC since I am not part of this list]
Dear list,
I was playing around with g++ when I got this weird behavior:
% cat a.cpp
#include <iostream>
#include <limits>
int main() {
}
% g++ a.cpp
% g++ -m32 a.cpp
In file included from a.cpp:2:0:
/usr/include/c++/4.8.2/limits:1405:35: error: template argument 1 is invalid
struct numeric_limits<__int128>
^
/usr/include/c++/4.8.2/limits:1479:44: error: template argument 1 is invalid
struct numeric_limits<unsigned __int128>
^
%
Compiling with -m32 breaks programs which include <limits>.
Is that a bug? Is there a work-around? Thanks.
Yours sincerely,
Paolo
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: -m32 and int128
2014-01-01 13:07 -m32 and int128 Paolo Bolzoni
@ 2014-01-01 13:36 ` Marc Glisse
2014-01-01 15:00 ` Paolo Bolzoni
0 siblings, 1 reply; 3+ messages in thread
From: Marc Glisse @ 2014-01-01 13:36 UTC (permalink / raw)
To: Paolo Bolzoni; +Cc: gcc-help
On Wed, 1 Jan 2014, Paolo Bolzoni wrote:
> [Please put me in CC since I am not part of this list]
>
> Dear list,
> I was playing around with g++ when I got this weird behavior:
>
> % cat a.cpp
> #include <iostream>
> #include <limits>
>
> int main() {
> }
>
>
> % g++ a.cpp
> % g++ -m32 a.cpp
> In file included from a.cpp:2:0:
> /usr/include/c++/4.8.2/limits:1405:35: error: template argument 1 is invalid
> struct numeric_limits<__int128>
> ^
> /usr/include/c++/4.8.2/limits:1479:44: error: template argument 1 is invalid
> struct numeric_limits<unsigned __int128>
> ^
> %
>
> Compiling with -m32 breaks programs which include <limits>.
> Is that a bug? Is there a work-around? Thanks.
Compile with the -v flag and compare the include search paths for -m64 and
for -m32. g++ is using the wrong bits/c++config.h with -m32, probably
because of some variable in your environment.
--
Marc Glisse
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: -m32 and int128
2014-01-01 13:36 ` Marc Glisse
@ 2014-01-01 15:00 ` Paolo Bolzoni
0 siblings, 0 replies; 3+ messages in thread
From: Paolo Bolzoni @ 2014-01-01 15:00 UTC (permalink / raw)
To: gcc-help
Dear Marc Glisse,
thanks a lot! Your comment pointed me to the right direction,
in my distro is a different package for "64bit only" and "multilib"
gcc and I had installed the former.
On Wed, Jan 1, 2014 at 2:36 PM, Marc Glisse <marc.glisse@inria.fr> wrote:
> On Wed, 1 Jan 2014, Paolo Bolzoni wrote:
>
>> [Please put me in CC since I am not part of this list]
>>
>> Dear list,
>> I was playing around with g++ when I got this weird behavior:
>>
>> % cat a.cpp
>> #include <iostream>
>> #include <limits>
>>
>> int main() {
>> }
>>
>>
>> % g++ a.cpp
>> % g++ -m32 a.cpp
>> In file included from a.cpp:2:0:
>> /usr/include/c++/4.8.2/limits:1405:35: error: template argument 1 is
>> invalid
>> struct numeric_limits<__int128>
>> ^
>> /usr/include/c++/4.8.2/limits:1479:44: error: template argument 1 is
>> invalid
>> struct numeric_limits<unsigned __int128>
>> ^
>> %
>>
>> Compiling with -m32 breaks programs which include <limits>.
>> Is that a bug? Is there a work-around? Thanks.
>
>
> Compile with the -v flag and compare the include search paths for -m64 and
> for -m32. g++ is using the wrong bits/c++config.h with -m32, probably
> because of some variable in your environment.
>
> --
> Marc Glisse
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-01-01 13:07 -m32 and int128 Paolo Bolzoni
2014-01-01 13:36 ` Marc Glisse
2014-01-01 15:00 ` Paolo Bolzoni
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