[Bug c/78304] [7 Regression] -Wformat doesn't warn anymore for inttypes.h format string argument type mismatches

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78304

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Even though that with my patch we expansion_point_location_if_in_system_header
the caret location, it still points to the location in the system header, so
the diagnostics is suppressed.