https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94440
--- Comment #11 from David Binderman <dcb314 at hotmail dot com> --- (In reply to Jakub Jelinek from comment #10) > I can't reproduce it anymore. The code in comment 7 still fails. $ /home/dcb/gcc/results/bin/gcc -c -w -ffast-math bug634.c 2>&1 | fgrep error: bug634.c:5:44: internal compiler error: in check_bool_attrs, at recog.c:2190 $ /home/dcb/gcc/results/bin/gcc -v Using built-in specs. COLLECT_GCC=/home/dcb/gcc/results/bin/gcc COLLECT_LTO_WRAPPER=/home/dcb/gcc/results.20201206/libexec/gcc/x86_64-pc-linux-gnu/11.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../trunk.git/configure --prefix=/home/dcb/gcc/results.20201206 --disable-bootstrap --disable-multilib --disable-werror --with-pkgversion=8c23434fdadcf4ca --enable-checking=df,extra,fold,rtl,yes --enable-languages=c,c++,fortran Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 11.0.0 20201206 (experimental) (8c23434fdadcf4ca)