Description of problem:
When any simple C++ file which includes <sys/signalfd.h> headers then its compilation fails with error
/usr/include/sys/signalfd.h:54: error: expected initializer before ‘throw’

Reference:-
While reviewing new package fbterm #465928 , I see above compilation problem. 

Version-Release number of selected component (if applicable):
glibc-2.8.90-13.fc10

How reproducible:
always

Steps to Reproduce:
1. compile source code 
---------------------------------------
#include <iostream>
#include <sys/signalfd.h>
using namespace std;
int main()
{
cout<<"Testing Throw";
return 0;
}
----------------------------------------
2. observe error
3.
  
Actual results:
/usr/include/sys/signalfd.h:54: error: expected initializer before ‘throw’

Expected results:
It should not report error.

Additional info:
I am not sure if this is correct to report bug to fix compilation error.
The solution I see is as
---------------------------------
#include <iostream>
#undef __THROW
#define __THROW
#include <sys/signalfd.h>
using namespace std;
int main()
{
cout<<"Testing Throw";
return 0;
}
--------------------------------