Moc fails to handle C++ template parameter containing '<' or '>'

The following code snippet just doesn't work:

[hidden]$ cat xx.h
template <bool b> struct X {};
struct Y : X<-1<0> {};

class X : public QObject {
Q_OBJECT
};
[hidden]$ moc xx.h -o xx.cpp
xx.h:0: Note: No relevant classes found. No output generated.

I tried both the moc in qt4 and qt5, none of them can handle it correctly.

This bug basically prevents building Qt using clang+libcxx because libcxx's <type_traits> header uses such techniques for is_signed template (it uses (T)-1<(T)0 to figure out if a type is signed or not). It makes the moc segment fault.

Please fix this issue! Any code that has '<' in the template parameter will break, not only limited to the clang header.