https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87381
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to eric-bugs from comment #1) > Godbolt link: https://godbolt.org/z/gHnb-G > > Also, my attempt to simplify this failed because clang will not consider > arguments to constexpr functions to be constexpr. Which, IMHO, is wrong. > Whether the fault is in the standard or clang, I don't know. It's not wrong. A constexpr function _can_ be used in a constant expression, but it can also be used elsewhere, in which case its arguments are not constants. constexpr int f(int i) { constexpr int j = 2 * i; // ERROR return j; } int main(int argc, char**) { return f(argc); } How can j be a constexpr variable?
