Bug#211586: complex.h misunderstood by g++

[Josh Stern <josh@neurovia.umn.edu>]

On Thursday 18 September 2003 15:57, Martin v. Löwis wrote:
> Josh Stern wrote:
> > Use of the C99 header <complex.h> in a C library header that
> > is then used within a C++ program causes compile/linkage
> > problems.   This problem was discovered via failing to compile
> > small examples using the m_get function in the meschach library
> > version included in Debian.
>
> This is not a bug. The C99 complex type is not supported in
> ISO C++98, or GNU C++.

I wasn't trying to actually do anything with C99's complex in
a C++ program.  At present,  g++ compilation fails with
misdirected error messages about templates if <complex.h>
is included at all, while the 
compilation succeeds if the **same** file, /usr/include/complex.h 
is copied to a file with a different name and then included under 
that name.   If it is really felt necessary to continue to reserve
the name <complex.h> for C++ (even under C linkage directive) 
then at least one might hope for a better error message.

-= Josh