https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87183
--- Comment #1 from Noah Pendleton <noah.pendleton at gmail dot com> --- Typo, the description should read- "Using <inttypes.h> format specifiers but omitting the `%` prefix causes the `-Werror=format-extra-args` error to not be **emitted**:" 😬