https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125257
Bug ID: 125257
Summary: ICE: in partitioner_base, at lto/lto-partition.cc:993
with -flto -flto-partition=cache
--param=lto-min-partition=0 on any input
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Compiler output:
$ echo '' | /repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
-flto -flto-partition=cache --param=lto-min-partition=0 -xc -
lto1: internal compiler error: in partitioner_base, at lto/lto-partition.cc:993
0x2d525ff internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:787
0xe3f0e3 fancy_abort(char const*, int, char const*)
/repo/gcc-trunk/gcc/diagnostics/context.cc:1813
0x7436ca partitioner_base::partitioner_base(long, long)
/repo/gcc-trunk/gcc/lto/lto-partition.cc:993
0x7436ca partitioner_base::partitioner_base(long, long)
/repo/gcc-trunk/gcc/lto/lto-partition.cc:989
0x7436ca partitioner_default::partitioner_default(long, long)
/repo/gcc-trunk/gcc/lto/lto-partition.cc:1053
0x7436ca lto_cache_map(int, int)
/repo/gcc-trunk/gcc/lto/lto-partition.cc:1156
0xe82854 do_whole_program_analysis
/repo/gcc-trunk/gcc/lto/lto.cc:563
0xe82854 lto_main()
/repo/gcc-trunk/gcc/lto/lto.cc:675
/repo/gcc-trunk/binary-trunk-20260508062249-r17-398-g582e88fd9184bb-checking-yes-rtl-df-extra-amd64/bin/../lib/gcc/../../libexec/gcc/x86_64-pc-linux-gnu/17.0.0/lto1
-quiet -dumpbase ./a.wpa -mtune=generic -march=x86-64 -fno-openmp -fno-openacc
-fno-pie -fcf-protection=none -flto-partition=cache
-fltrans-output-list=/tmp/cc2TwhFk.ltrans.out -fwpa
-fresolution=/tmp/cc0x8kCl.res -flinker-output=exec --param=lto-min-partition=0
@/tmp/ccr8d3cb
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error:
/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc returned 1 exit
status
compilation terminated.
/usr/x86_64-pc-linux-gnu/binutils-bin/2.46.0/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
The failing assertion is:
gcc_assert (min_partition_size != 0);
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-20260508062249-r17-398-g582e88fd9184bb-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/17.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--enable-libsanitizer --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-20260508062249-r17-398-g582e88fd9184bb-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 17.0.0 20260508 (experimental) (GCC)
