make failure trying to build gmp-5.1.0a on Tru64unix v5.1b system

[Marc Glisse]

On Fri, 15 Feb 2013, Bill.Glessner at cwu.EDU wrote:

> Later in the build I encountered the following C++ issues:
>
> libtool: compile:  cxx -DHAVE_CONFIG_H -I. -I.. -D__GMP_WITHIN_GMPXX -I.. -D__US
> E_STD_IOSTREAM -nocompress -c limits.cc  -DPIC -o .libs/limits.o
> cxx: Error: ../gmpxx.h, line 1516: no instance of function template
>          "std::swap" matches the argument list
>            argument types are: (__mpz_struct, __mpz_struct)
>  void swap(__gmp_expr& z) __GMPXX_NOEXCEPT { std::swap(*mp, *z.mp); }
> ----------------------------------------------^
> cxx: Error: ../gmpxx.h, line 1710: no instance of function template
>          "std::swap" matches the argument list
>            argument types are: (__mpq_struct, __mpq_struct)
>  void swap(__gmp_expr& q) __GMPXX_NOEXCEPT { std::swap(*mp, *q.mp); }
> ----------------------------------------------^
> cxx: Error: ../gmpxx.h, line 1931: no instance of function template
>          "std::swap" matches the argument list
>            argument types are: (__mpf_struct, __mpf_struct)
>  void swap(__gmp_expr& f) __GMPXX_NOEXCEPT { std::swap(*mp, *f.mp); }
> ----------------------------------------------^
> cxx: Info: 3 errors detected in the compilation of "limits.cc".

Interesting, old versions of Sun's compiler seem to have trouble with 
the same construction. Does it work if you replace:

std::swap(*mp, *z.mp);

with:

std::iter_swap(mp, z.mp);

? If not, does it work with:

mpz_swap(mp, z.mp);

? (replacing 'z' with 'q' or 'f' as appropriate for the other versions)

-- 
Marc Glisse