https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70552
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> --- Yes, thanks for pointing that out. I think the change is r233671. I certainly agree that it's useful to be able to step through constexpr functions in non-constexpr contexts. In the test case below, however, the definition of foo() isn't emitted into the object file so it cannot be stepped into. The builtin simply returns the wrong result. I hope we can make it so that it returns the useful result I described in comment #0 while still maintaining the useful debuggability outside of constexpr contexts.
