On Tue, Jun 14, 2022 at 06:59:41PM -0400, Nicholas Vinson wrote:
When building with clang and glibc and -D_FORTIFY_SOURCE=2 is passed to
clang, the snprintf member of the expr_ops and obj_ops structures will
be incorrectly replaced with __builtin_snprintf_chk() which results in
"error: no member named '__builtin___snprintf_chk'" errors at build
time.
Please, report this to upstream compiler devel list too.
It's been reported upstream a few times already. Relevant links below.
https://github.com/llvm/llvm-project/issues/7591
https://github.com/llvm/llvm-project/issues/12053
https://github.com/llvm/llvm-project/issues/17831
This patch changes the member name from 'snprintf' to 'nftnl_snprintf'
to prevent the replacement.
This bug can be emulated using GCC by undefining the __va_arg_pack macro
before stdio.h is included.
This patch is based on the notes provided in
https://bugs.gentoo.org/807766.
Please, rename it to .output instead, I'd suggest.
Renamed from nftnl_snprintf to .output.
Thanks,
Nicholas Vinson
