Hello,

after this patch on the emacs-26 branch I can't build it no more:

  CCLD     temacs
/bin/mkdir -p ../etc
make -C ../lisp update-subdirs
make[2]: Entering directory '/home/drot/build/emacs/lisp'
make[2]: Leaving directory '/home/drot/build/emacs/lisp'
./temacs --batch  --load loadup bootstrap
Loading loadup.el (source)...
Using load-path (/home/drot/build/emacs/lisp
/home/drot/build/emacs/lisp/emacs-lisp
/home/drot/build/emacs/lisp/progmodes /home/drot/build/emacs/lisp/language
/home/drot/build/emacs/lisp/international
/home/drot/build/emacs/lisp/textmodes /home/drot/build/emacs/lisp/vc)
Loading emacs-lisp/byte-run (source)...
Loading emacs-lisp/backquote (source)...
Loading subr (source)...
Fatal error 6: Aborted
Backtrace:
./temacs[0x81624a5]
./temacs[0x81431ea]
./temacs[0x816255f]
./temacs[0x81acea1]
./temacs[0x81acb91]
./temacs[0x81ad4f9]
./temacs[0x81cd0c9]
./temacs[0x81cd98e]
./temacs[0x81cf682]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81ce1ff]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81cde01]
./temacs[0x81cdfa6]
./temacs[0x81cd2bc]
./temacs[0x81ce38e]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81cea3a]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81cf682]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81ce1ff]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81cde01]
./temacs[0x81cdfa6]
./temacs[0x81cd2bc]
./temacs[0x81ce38e]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81cea3a]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81cf682]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81ce1ff]
./temacs[0x81cd673]
./temacs[0x81cd98e]
./temacs[0x81cde01]
./temacs[0x81cdfa6]
./temacs[0x81cd2bc]
./temacs[0x81cd461]
./temacs[0x81cd98e]
./temacs[0x81cde01]
./temacs[0x81ca9f6]
./temacs[0x81cce33]
./temacs[0x81ccfa3]
./temacs[0x81cd359]
./temacs[0x81cd98e]
./temacs[0x81cde01]
...
Makefile:737: recipe for target 'bootstrap-emacs' failed
make[1]: *** [bootstrap-emacs] Aborted
make[1]: Leaving directory '/home/drot/build/emacs/src'
Makefile:416: recipe for target 'src' failed
make: *** [src] Error 2

This is with the following GCC version:

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-linux-gnu/7/lto-wrapper
Target: i686-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 7.2.0-12'
--with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=i686-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin
--enable-default-pie --with-system-zlib --with-target-system-zlib
--enable-objc-gc=auto --enable-targets=all --enable-multiarch
--disable-werror --with-arch-32=i686 --with-multilib-list=m32,m64,mx32
--enable-multilib --with-tune=generic --enable-checking=release
--build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu
Thread model: posix
gcc version 7.2.1 20171025 (Debian 7.2.0-12)