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Description of problem:
/usr/include/rpm/rpmds.h line 276:
int rpmdsFind(rpmds ds, /*@null@*/ rpmds this)
/usr/include/rpm/rpmds.h line 286
int rpmdsMerge(/*@out@*/ rpmds * dsp, /*@null@*/ rpmds this)

Within these prototypes the identifier "this" is a valid argument name in C, but
a reserved keyword in C++, thus if a C++ program includes the rpmds.h header it
will fail to compile.

I think a simple fix would be to change "this" variable name to any other valid
non-keyword.

For example, apt for rpm written in C++ fails with this error:
Compiling rpm/rpmlistparser.cc to /usr/src/redhat/BUILD/apt-0.5.4cnc9/obj/apt-pk
g/rpmlistparser.opic
In file included from rpm/rpmlistparser.cc:33:
/usr/include/rpm/rpmds.h:276: parse error before `this'
/usr/include/rpm/rpmds.h:286: parse error before `this'

Version-Release number of selected component (if applicable):
Rawhide rpm-4.2.0-0.25.1
Rawhide gcc-3.2.1-2
Freshrpms apt-0.5.4cnc9