cannot find valid stdio.h header in gcc-4.0.0 sources

[moy]

Hi,

I could not find a valid stdio.h to include in the sources of gcc-4.0.0:

./fixincludes/tests/base/stdio.h
./gcc/testsuite/gcc.dg/cpp/usr/include/stdio.h
./libstdc++-v3/include/c_compatibility/stdio.h

None declares the expected functions, printf for example.

Where can I find it ?
Thanks,

Yannick Moy