It has come to my attention that GCC and clang generate incompatible code for passing an argument of an empty class type.
clang seems to completely ignore arguments and parameters of empty class type -- which seems to make a certain amount of sense. OTOH, as far as I understand it, GCC effectively treats an empty class equivalently to a class containing a single member with some character type -- which also seems pretty reasonable. Should the C++ ABI come down on one side or the other of this question? This is really the sort of question a psABI should settle. But of course the C language doesn't actually support a structure with no members, so it's not too surprising if a psABI doesn't nail down what should happen for this. -- Clark Nelson Chair, PL22.16 (ANSI C++ standard committee) Intel Corporation Chair, SG10 (C++ SG for feature-testing) [email protected] Chair, CPLEX (C SG for parallel language extensions) _______________________________________________ cxx-abi-dev mailing list [email protected] http://sourcerytools.com/cgi-bin/mailman/listinfo/cxx-abi-dev
