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From: "luke-jr+gccbugs at utopios dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/102993] -fcf-protection=full produces segfaulting code
 when targeting 32-bit x86 (i686)
Date: Fri, 29 Oct 2021 00:33:26 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102993

Luke Dashjr <luke-jr+gccbugs at utopios dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|7.0                         |9.3.0

--- Comment #2 from Luke Dashjr <luke-jr+gccbugs at utopios dot org> ---
# i686-w64-mingw32-g++ -v
Using built-in specs.
COLLECT_GCC=3Di686-w64-mingw32-g++
COLLECT_LTO_WRAPPER=3D/usr/lib/gcc/i686-w64-mingw32/9.3-posix/lto-wrapper
Target: i686-w64-mingw32
Configured with: ../../src/configure --build=3Dx86_64-linux-gnu --prefix=3D=
/usr
--includedir=3D'/usr/include' --mandir=3D'/usr/share/man'
--infodir=3D'/usr/share/info' --sysconfdir=3D/etc --localstatedir=3D/var
--disable-silent-rules --libdir=3D'/usr/lib/x86_64-linux-gnu'
--libexecdir=3D'/usr/lib/x86_64-linux-gnu' --disable-maintainer-mode
--disable-dependency-tracking --prefix=3D/usr --enable-shared --enable-stat=
ic
--disable-multilib --with-system-zlib --libexecdir=3D/usr/lib
--without-included-gettext --libdir=3D/usr/lib --enable-libstdcxx-time=3Dyes
--with-tune=3Dgeneric --with-headers=3D/usr/i686-w64-mingw32/include
--enable-version-specific-runtime-libs --enable-fully-dynamic-string
--enable-libgomp --enable-languages=3Dc,c++,fortran,objc,obj-c++,ada --enab=
le-lto
--enable-threads=3Dposix --program-suffix=3D-posix
--program-prefix=3Di686-w64-mingw32- --target=3Di686-w64-mingw32
--with-as=3D/usr/bin/i686-w64-mingw32-as --with-ld=3D/usr/bin/i686-w64-ming=
w32-ld
--enable-libatomic --enable-libstdcxx-filesystem-ts=3Dyes
--enable-dependency-tracking
Thread model: posix
gcc version 9.3-posix 20200320 (GCC)=20

Apparently it's actually 9.3? (Was confused since the mingw-w64-i686-dev
package is 7.0.0-2, but g++-mingw-w64-i686 is indeed
9.3.0-7ubuntu1+22~exp1ubuntu4)

Not sure how to test newer GCC on Ubuntu, though I could try an entirely ne=
wer
version of Ubuntu if that would help.=