[GCC-XML] GCCXML chokes on <complex>

[Steve M. Robbins]

On Thu, May 13, 2010 at 11:28:19AM -0400, Brad King wrote:
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> 
> Steve M. Robbins wrote:
> > /usr/include/c++/4.4/alpha-linux-gnu/bits/c++config.h:214: error: expected unqualified-id before 'namespace'
> [snip]
> > I tried compiling a simple program:
> > 
> > #include <complex>
> > 
> > int main(int ac, char* av[])
> > {
> >     return 0;
> > }
> > 
> > With gcc, it compiles on alpha.  Using gccxml, I get the same error as shown above.
> > Does gccxml need a tweak to handle this?
> 
> It would seem so.  You can use "gccxml -E" to preprocess the test
> source and compare it to what "gcc -E" produces for the offending
> spot.  Note that gccxml uses a patched GCC 4.2 parser internally
> so sometimes it has trouble with headers from newer GCC versions.
> The solution we use is to put tweaked versions of the offending
> headers in "GCC_XML/Support/GCC/4.4" or other support directories.

OK, I did run "gccxml -E" and "gcc -E".  I can't figure what tweaks
need to be made.

Here's what "gcc -E" displays for the problematic line 214 of c++config.h:

  # 42 "/usr/include/c++/4.4/complex" 3

  # 1 "/usr/include/c++/4.4/alpha-linux-gnu/bits/c++config.h" 1 3
  # 212 "/usr/include/c++/4.4/alpha-linux-gnu/bits/c++config.h" 3
  namespace std
  {
    inline namespace __gnu_cxx_ldbl128 { }
  }

And "gccxml -E" displays the same thing.  The difference is that
there's a bunch of stuff (mainly declarations of functions named
__builtin_foo) from "/usr/share/gccxml-0.9/GCC/4.4/gccxml_builtins.h"
appearing before this.

Anyone have ideas?

Thanks,
-Steve

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