$ cat tf-test.cpp #include <typeinfo> typedef float type __attribute__((__mode__(TF))); int main() { return *(typeid(type).name()); }
$ g++ tf-test.cpp /tmp/cc8RAh4o.o: In function `main': tf-test.cpp:(.text+0x5): undefined reference to `typeinfo for __float128' collect2: ld returned 1 exit status $ cat ti-test.cpp #include <typeinfo> typedef int type __attribute__((__mode__(TI))); int main() { return *(typeid(type).name()); } $ g++ ti-test.cpp /tmp/ccI1nTTK.o: In function `main': ti-test.cpp:(.text+0x5): undefined reference to `typeinfo for __int128' collect2: ld returned 1 exit status $ g++ --version | head -1 g++ (GCC) 4.5.0 20100401 (experimental) -- Summary: no C++ typeinfo for __float128 and __int128 Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: roman at binarylife dot net GCC build triplet: x86_64-unknown-linux-gnu GCC host triplet: x86_64-unknown-linux-gnu GCC target triplet: x86_64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43622