Hi,

Klaus Heinz wrote:
> Do you want to say gcc decides to check prototypes differently depending
> on the location where it finds the files? I find that hard to believe.

 From man gcc:

-Wsystem-headers
      Print warning messages for constructs found in system header files.
      Warnings from system headers are normally suppressed, on the
      assumption that they usually do not indicate real problems and
      would only make the compiler output harder to read.  Using this
      command line option tells GCC to emit warnings from system headers
      as if they occurred in user code.
      ...

Hope it helps.

Ciao,
Wolfgang
-- 
Wolfgang@Solfrank.net				Wolfgang Solfrank