Fix ABI incompatible C++03 nullptr_t
In C++03 libc++ emulates nullptr_t using a class, and #define's nullptr.
However this makes nullptr_t mangle differently between C++03 and C++11.
This breaks any function ABI which takes nullptr_t.
Thanfully Clang provides __nullptr in all dialects. This patch adds
an ABI option to switch to using __nullptr in C++03. In a perfect world
I would like to turn this on by default, since it's just ABI breaking fix
to an ABI breaking bug.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@290662 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed
