On Thu, May 17, 2007 at 02:27:56PM +0100, Raymond Meyer wrote:
> [raymond@ultra10] uname -a
> SunOS ultra10 5.10 Generic_118833-36 sun4u sparc SUNW,Ultra-5_10
> [raymond@ultra10] /opt/gcc4/bin/gcc -v
> Using built-in specs.
> Target: sparc-sun-solaris2.10
> Configured with: ../gcc-4.1.1/configure --prefix=/opt/gcc4 --with-cpu=ultrasparc --enable-languages=c,c++,ada --enable-shared --enable-__cxa_atexit --disable-nls
> Thread model: posix
> gcc version 4.1.1

Check the configuration header of libstdc++ whether it has C99 support
active.

Joerg