[Bug c++/40855] New: undefined reference to `typeinfo for __int128'

[Bug c++/40855] New: undefined reference to `typeinfo for __int128'

[john dot salmon at deshaw dot com]

When I try to take the typeid of an __int128_t or a __uint128_t, I get an
undefined reference at link time, e.g., with gcc/4.4.1:

salmonj@drdblogin6.en.desres$ cat typeid.cpp
#include <typeinfo>

const std::type_info& ti(typeid(int)); // no problem
const std::type_info& ti128(typeid(__int128_t));
const std::type_info& tu128(typeid(__uint128_t));

int main(){}

salmonj@drdblogin6.en.desres$ desres-cleanenv -m gcc/4.4.1-13/bin g++
-std=gnu++0x  typeid.cpp 
/tmp/ccKpEAiz.o:(.rodata+0x8): undefined reference to `typeinfo for __int128'
/tmp/ccKpEAiz.o:(.rodata+0x10): undefined reference to `typeinfo for unsigned
__int128'
collect2: ld returned 1 exit status
salmonj@drdblogin6.en.desres$


-- 
           Summary: undefined reference to `typeinfo for __int128'
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: john dot salmon at deshaw dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40855

[Bug c++/40855] undefined reference to `typeinfo for __int128'

[bangerth at gmail dot com]

------- Comment #1 from bangerth at gmail dot com  2009-08-25 14:13 -------
With current mainline, I just get these errors:

g/x> /home/bangerth/bin/x86/gcc-mainline/bin/c++ x.cc -std=c++0x
x.cc:4:36: error: '__int128_t' was not declared in this scope
x.cc:5:36: error: '__uint128_t' was not declared in this scope

What do I need to do to make these types available?


-- 

bangerth at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bangerth at gmail dot com
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40855

[Bug c++/40855] undefined reference to `typeinfo for __int128'

[joseph at codesourcery dot com]

------- Comment #2 from joseph at codesourcery dot com  2009-08-25 14:48 -------
Subject: Re:  undefined reference to `typeinfo for __int128'

On Tue, 25 Aug 2009, bangerth at gmail dot com wrote:

> With current mainline, I just get these errors:
> 
> g/x> /home/bangerth/bin/x86/gcc-mainline/bin/c++ x.cc -std=c++0x
> x.cc:4:36: error: '__int128_t' was not declared in this scope
> x.cc:5:36: error: '__uint128_t' was not declared in this scope
> 
> What do I need to do to make these types available?

They are only available for 64-bit targets (more precisely, 64-bit targets 
other than PA; testcases use #if (defined(__LP64__) && !defined(__hppa__)) 
|| defined(_WIN64)).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40855

[Bug c++/40855] undefined reference to `typeinfo for __int128'

[bangerth at gmail dot com]

------- Comment #3 from bangerth at gmail dot com  2009-08-25 15:26 -------
Confirmed with gcc4.2.1.
W.


-- 

bangerth at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|0000-00-00 00:00:00         |2009-08-25 15:26:14
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40855