https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78512
Nick Desaulniers <ndesaulniers at google dot com> changed:
What |Removed |Added
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CC| |ndesaulniers at google dot com
--- Comment #10 from Nick Desaulniers <ndesaulniers at google dot com> ---
I'm not super happy that GCC has false-negatives when %p is encountered. Bugs
do exist outside of the Linux kernel with the usage of %p that could be
flagged.
Clang-18 has recently added -Wno-format-overflow-non-kprintf and
-Wformat-truncation-non-kprintf to emulate this behavior in
https://github.com/llvm/llvm-project/pull/65969, which we will use in the
kernel
https://github.com/ClangBuiltLinux/linux/issues/1923#issuecomment-1718144462.
At the least, I think this behavior wrt. %p should either be documented, or
-Wno-format-overflow-non-kprintf and -Wformat-truncation-non-kprintf
implemented in GCC.
That said, this diagnostic catches real bugs! Linus turned them off, but we
will work through fixing the instances identified towards the goal of getting
them re-enabled for the Linux kernel.
https://github.com/KSPP/linux/issues/343
