https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71980
Bug ID: 71980
Summary: [5] libraw on x86_64-linux-musl causes ICE in
vect_analyze_data_ref_accesses, at
tree-vect-data-refs.c:2596
Product: gcc
Version: 5.4.0
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: awilfox at adelielinux dot org
Target Milestone: ---
Hello. We are starting a new musl libc-based Linux distribution targeting
desktops called Adélie Linux; our target is therefore x86_64-foxkit-linux-musl.
We use the Gentoo and musl patchsets for GCC. I have also cherry-picked the
fix for #71505 and applied it as an additional patch, since it seemed to have a
very similar issue. Still, we are seeing the following output when attempting
to build libraw-0.16.2:
[ 42%] Building CXX object CMakeFiles/raw_r.dir/internal/demosaic_packs.cpp.o
/usr/bin/x86_64-foxkit-linux-musl-g++ -DUSE_JPEG -DUSE_JPEG8 -DUSE_LCMS2
-Draw_r_EXPORTS -DNDEBUG -O2 -ggdb -march=nocona -mtune=core2
-fno-omit-frame-pointer -mfpmath=sse -fPIC
-I/usr/src/media-libs/libraw-0.16.2/work/LibRaw-0.16.2-.default
-I/usr/src/media-libs/libraw-0.16.2/work/LibRaw-0.16.2 -w -fPIC -O4 -o
CMakeFiles/raw_r.dir/internal/demosaic_packs.cpp.o -c
/usr/src/media-libs/libraw-0.16.2/work/LibRaw-0.16.2/internal/demosaic_packs.cpp
/usr/src/media-libs/libraw-0.16.2/work/LibRaw-0.16.2/internal/./dcb_demosaicing.c:
In member function ‘void LibRaw::dcb_nyquist()’:
/usr/src/media-libs/libraw-0.16.2/work/LibRaw-0.16.2/internal/demosaic_packs.cpp:26:15:
internal compiler error: in vect_analyze_data_ref_accesses, at
tree-vect-data-refs.c:2596
#define CLASS LibRaw::
^
/usr/src/media-libs/libraw-0.16.2/work/LibRaw-0.16.2/internal/./dcb_demosaicing.c:231:6:
note: in expansion of macro ‘CLASS’
void CLASS dcb_nyquist()
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bts.adelielinux.org/> for instructions.
CMakeFiles/raw.dir/build.make:110: recipe for target
'CMakeFiles/raw.dir/internal/demosaic_packs.cpp.o' failed
make[2]: *** [CMakeFiles/raw.dir/internal/demosaic_packs.cpp.o] Error 1
This also occurs on a vanilla 5.4.0, i.e. without any distro patches applied.
I do realise that upstream really should not be using -O4. Adding
"-fno-tree-loop-vectorize -fno-tree-slp-vectorize" allowed the build to
continue. But since this is likely a bug anyway, I have filed it here.
ciall ~ # gcc -v
Using built-in specs.
COLLECT_GCC=/usr/x86_64-foxkit-linux-musl/gcc-bin/5.4.0/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-foxkit-linux-musl/5.4.0/lto-wrapper
Target: x86_64-foxkit-linux-musl
Configured with:
/var/tmp/portage/sys-devel/gcc-5.4.0-r1/work/gcc-5.4.0/configure
--host=x86_64-foxkit-linux-musl --build=x86_64-foxkit-linux-musl --prefix=/usr
--bindir=/usr/x86_64-foxkit-linux-musl/gcc-bin/5.4.0
--includedir=/usr/lib/gcc/x86_64-foxkit-linux-musl/5.4.0/include
--datadir=/usr/share/gcc-data/x86_64-foxkit-linux-musl/5.4.0
--mandir=/usr/share/gcc-data/x86_64-foxkit-linux-musl/5.4.0/man
--infodir=/usr/share/gcc-data/x86_64-foxkit-linux-musl/5.4.0/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-foxkit-linux-musl/5.4.0/include/g++-v5
--with-python-dir=/share/gcc-data/x86_64-foxkit-linux-musl/5.4.0/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--enable-checking=release --with-bugurl=http://bts.adelielinux.org/
--with-pkgversion='Adélie 5.4.0-r1 p1.0, pie-0.6.5' --enable-libstdcxx-time
--enable-shared --enable-threads=posix --disable-multilib --disable-altivec
--disable-fixed-point --enable-targets=all --disable-libgcj --enable-libgomp
--disable-libmudflap --enable-libssp --disable-libcilkrts --disable-libmpx
--disable-vtable-verify --disable-libvtv --enable-lto --without-isl
--disable-libsanitizer
Thread model: posix
gcc version 5.4.0 (Adélie 5.4.0-r1 p1.0, pie-0.6.5)
