https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89722
--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Martin Sebor from comment #6) > But the code above doesn't trigger either warning when compiled as C. I > think that suggests that either the manual should be updated to explain the > difference or the two front ends should be made to behave the same way. As C++ is clear that a prvalue of non-class type is cv-unqualified, I assume that's also true in C. But it matters less for C, because (except for extensions like __typeof__) the cv-qualifiers of an rvalue don't really matter. In C++ they affect overloading, template argument deduction, decltype results etc. > a data point, Clang doesn't warn in either C or C++ modes on this code so I > wonder if G++ is being overly pedantic here, especially in the typeof cases. As I noted in PR 80544 comment 0, EDG warns about casts to cv-qualified scalar types, and was my inspiration for our warning.
