https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53917
--- Comment #6 from David Malcolm <dmalcolm at gcc dot gnu.org> --- (In reply to Eric Gallager from comment #4) > David Malcolm recently greatly improved variable use location info for GCC > 9; reminder to myself to check to see if that fixed this once I've finished > building a new GCC with the patch applied... FWIW godbolt.org has a regularly refreshed version of gcc trunk (and many other compilers) usable directly in a web browser (--version will tell you at least the date of the svn revision it was built from). I suspect the new location wrappers for C++ won't fix this; the warning is implemented in the middle-end (on the gimple representation), and the new wrappers may well have been stripped before then. (But they may help with an eventual fix).
