https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118404
Bug ID: 118404
Summary: [15 regression] ICE when building openvdb-12.0.0 in
ifcombine
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
CC: aoliva at gcc dot gnu.org
Target Milestone: ---
It takes a while to crash. It may be a dupe of PR118344, I don't have trunk
built w/ latest ifcombine fixes yet.
```
$ g++ -x c++ -c ccbFppye.out -march=znver3 -march=znver3 -mmmx -mpopcnt -msse
-msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -mavx -mavx2 -msse4a -mno-fma4 -mno-xop
-mfma -mno-avx512f -mbmi -mbmi2 -maes -mpclmul -mno-avx512vl -mno-avx512bw
-mno-avx512dq -mno-avx512cd -mno-avx512vbmi -mno-avx512ifma
-mno-avx512vpopcntdq -mno-avx512vbmi2 -mno-gfni -mvpclmulqdq -mno-avx512vnni
-mno-avx512bitalg -mno-avx512bf16 -mno-avx512vp2intersect -mno-3dnow -madx
-mabm -mno-cldemote -mclflushopt -mclwb -mclzero -mcx16 -mno-enqcmd -mf16c
-mfsgsbase -mfxsr -mno-hle -msahf -mno-lwp -mlzcnt -mmovbe -mno-movdir64b
-mno-movdiri -mmwaitx -mno-pconfig -mpku -mprfchw -mno-ptwrite -mrdpid -mrdrnd
-mrdseed -mno-rtm -mno-serialize -mno-sgx -msha -mshstk -mno-tbm -mno-tsxldtrk
-mvaes -mno-waitpkg -mwbnoinvd -mxsave -mxsavec -mxsaveopt -mxsaves
-mno-amx-tile -mno-amx-int8 -mno-amx-bf16 -mno-uintr -mno-hreset -mno-kl
-mno-widekl -mno-avxvnni -mno-avx512fp16 -mno-avxifma -mno-avxvnniint8
-mno-avxneconvert -mno-cmpccxadd -mno-amx-fp16 -mno-prefetchi -mno-raoint
-mno-amx-complex -mno-avxvnniint16 -mno-sm3 -mno-sha512 -mno-sm4 -mno-apxf
-mno-usermsr -mno-avx10.2 -mno-avx10.2-256 -mno-avx10.2-512 -mno-amx-avx512
-mno-amx-tf32 -mno-amx-transpose -mno-amx-fp8 -mno-movrs -mno-amx-movrs --param
l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=512
-mtune=znver3 -O3 -fno-strict-aliasing
during GIMPLE pass: ifcombine
/var/tmp/paludis/media-gfx-openvdb-12.0.0/work/openvdb-12.0.0/nanovdb/nanovdb/unittest/TestNanoVDB.cc:
In function ‘TestNanoVDB_BuildTree_Test::TestBody()::<lambda(const
nanovdb::CoordBBox&)>’:
/var/tmp/paludis/media-gfx-openvdb-12.0.0/work/openvdb-12.0.0/nanovdb/nanovdb/unittest/TestNanoVDB.cc:7814:23:
internal compiler error: Segmentation fault
0x629daf76a34a internal_error(char const*, ...)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/diagnostic-global-context.cc:517
0x629daeeea0c4 crash_signal
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/toplev.cc:323
0x73e35c6d80ef ???
/usr/src/debug/sys-libs/glibc-9999/glibc-9999/signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
0x629daf801220 wi::force_to_size(long*, long const*, unsigned int, unsigned
int, unsigned int, signop)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/wide-int.cc:381
0x629daf801220
wide_int_storage::from(generic_wide_int<wide_int_ref_storage<false, true> >
const&, unsigned int, signop)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/wide-int.h:1293
0x629dae53bdb4 fold_truth_andor_for_ifcombine(tree_code, tree_node*, unsigned
long, tree_code, tree_node*, tree_node*, unsigned long, tree_code, tree_node*,
tree_node*, tree_node**)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/gimple-fold.cc:8602
0x629db02d8988 ifcombine_ifandif
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-ssa-ifcombine.cc:976
0x629db02c7bb0 tree_ssa_ifcombine_bb_1
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-ssa-ifcombine.cc:1071
0x629dafc7f694 tree_ssa_ifcombine_bb
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-ssa-ifcombine.cc:1207
0x629dafc7f694 execute
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/tree-ssa-ifcombine.cc:1400
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
```
---
```
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/15/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-15.0.9999/work/gcc-15.0.9999/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/15
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/15/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/15/python
--enable-objc-gc --enable-languages=c,c++,d,go,objc,obj-c++,fortran,ada,m2,rust
--enable-obsolete --enable-secureplt --disable-werror --with-system-zlib
--enable-nls --without-included-gettext --disable-libunwind-exceptions
--enable-checking=yes,extra,rtl --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo Hardened 15.0.9999 p, commit
93975113f3b353a27dea263c60ee62b27894be9b' --with-gcc-major-version-only
--enable-libstdcxx-time --enable-lto --disable-libstdcxx-pch --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--enable-multilib --with-multilib-list=m32,m64 --disable-fixed-point
--enable-targets=all --enable-offload-defaulted
--enable-offload-targets=nvptx-none --enable-libgomp --disable-libssp
--enable-libada --disable-cet --disable-systemtap --enable-valgrind-annotations
--disable-vtable-verify --disable-libvtv --with-zstd --with-isl
--disable-isl-version-check --enable-default-pie --enable-host-pie
--enable-host-bind-now --enable-default-ssp --disable-fixincludes
--with-build-config='bootstrap-O3 bootstrap-lto'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20250110 (experimental)
bd28244ec92b9aac082f822987818ff1e11b67fd (Gentoo Hardened 15.0.9999 p, commit
93975113f3b353a27dea263c60ee62b27894be9b)
```
