https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68810
--- Comment #2 from vries at gcc dot gnu.org --- In more detail, the c++11 failures look like this: ... src/gcc/testsuite/g++.dg/cpp0x/constexpr-reinterpret1.C: In static member function 'static constexpr B::Inner& B::getInner()': src/gcc/testsuite/g++.dg/cpp0x/constexpr-reinterpret1.C:20:14: error: reinterpret_cast from integer to pointer compiler exited with status 1 FAIL: g++.dg/cpp0x/constexpr-reinterpret1.C -std=c++11 (test for errors, line 21) FAIL: g++.dg/cpp0x/constexpr-reinterpret1.C -std=c++11 (test for excess errors) ... The test for error is at line 21, the error is at line 20.