LLVM, attribute push and namespace... bad interactions?

attributepush_namespace.cpp

// the following works fine under clang:
#pragma clang attribute push(__attribute__((target("sse4.2,pclmul"))), apply_to=function)
void f(){}
#pragma clang attribute pop


////////////
/// The following DOES NOT WORK: 'error: expected unqualified-id'
//////////
namespace joe {
#pragma clang attribute push(__attribute__((target("sse4.2,pclmul"))), apply_to=function)
void g() {}
#pragma clang attribute pop
}

int main() {
  g();
}