[Bug c++/55252] Caret diagnostic doesn't show useful location when macro clashes with name in system header

[tromey at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55252

--- Comment #15 from Tom Tromey <tromey at gcc dot gnu.org> ---
*** Bug 61803 has been marked as a duplicate of this bug. ***