On 24/05/12 20:47, Dan Liew wrote: > Perhaps it is an issue with my distribution then. Are you using Arch > Linux on a 64-bit system? I have the output of running $ g++ -v -m32 > limits.cpp here: http://pastebin.com/JRJcVDX2 It is showing some > header mismatch issues but I do not know if it is related to my issue. > Any ideas what might be wrong? You seem to be using a 64bit-only compiler: > --disable-multilib I'd have expected it to reject the -m32 switch in such case, but it's probably the issue. For Arch Linux I think you should install the gcc-multilib package. Probably as consequence of not being, a multilib compiler, it is reading the bits files from /usr/include/c++/4.7.0/x86_64-unknown-linux-gnu/bits (which would be 64 bits) instead of /usr/include/c++/4.7.0/x86_64-unknown-linux-gnu/32/bits There's only a few differences in my system between both folders, some #define in c++config.h, but they seem to make the difference. The error limits:1405:35: error: template argument 1 is invalid comes from this excerpt: > #if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_INT128) > /// numeric_limits<__int128> specialization. > template<> > struct numeric_limits<__int128> > { One of the different defines is precisely _GLIBCXX_USE_INT128 not being defined in 32bit folder. So, you don't have multilib compiler properly setup, in -m32 it doesn't have __int128 type, but as it's using the wrong config, it is trying nonetheless to use it, which produces your error. You should be able to bypass it with -D__STRICT_ANSI__, but then it might break later at another point. You should install the appropiate multilib package. Regards
