https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93419
--- Comment #5 from kloetzl <fabian-gcc at kloetzl dot info> ---
Sorry for missing out the details, here goes:
I work in a Debian Hurd 20290705 image using qemu. The example file is given
above. Compiling with `gcc -Wall -Wextra ifunc.c` produces the following error.
error: ifunc is not supported on this target
int fn(void) __attribute((ifunc("fn_select")));
The output of gcc -v is (may contain typos)
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-gnu/8/lto-wrapper
Target: i686-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 8.3.0-7'
--with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8 --program-prefix=i686-gnu-
--enable-shared --enable-linker-build-id --libexecdir=/usr/lib
--without-include-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --disable-libitm --disable-libsanitizer
--enable-plugin --enable-default-pie --with-system-zlib --disable-libphobos
--enable-multiarch --disable-werror --with-arch=i586 --with-tune=generic
--enable-checking=release --build=i686-gnu --host-i686-gnu --target=i686-gnu
Thread model: posix
gcc version 8.3.0 (Debian 8.3.0-7)
So it is not 9.0 as I first thought.
Hope this helps.
