https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124125
Bug ID: 124125
Summary: [16 Regression] TestCGOLTO showan ICE, lto1: error:
qsort comparator non-negative on sorted outpu
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
the TestCGOLTO fails with trunk mid December, and 20260210, on all
architectures. seen when building the golang-NN packages:
--- FAIL: TestCGOLTO (0.04s)
cgo_test.go:32: /<<PKGBUILDDIR>>/bin/go env CC: "gcc"
cgo_test.go:32: /<<PKGBUILDDIR>>/bin/go env CGO_CFLAGS: "-O2 -g"
--- FAIL: TestCGOLTO/0 (11.39s)
cgo_test.go:123: CGO_CFLAGS="-O2 -g -flto" /<<PKGBUILDDIR>>/bin/go
build
cgo_test.go:125: # cgolto
/<<PKGBUILDDIR>>/pkg/tool/linux_amd64/link: running gcc failed:
exit status 1
/usr/bin/gcc -m64
-Wl,--build-id=0x49c95752cccaa7906e6bb93aa0f8421246386020 -o
$WORK/b001/exe/a.out -Wl,--export-dynamic-symbol=_cgo_panic
-Wl,--export-dynamic-symbol=_cgo_topofstack
-Wl,--export-dynamic-symbol=crosscall2 -Wl,--export-dynamic-symbol=myadd
-Wl,--compress-debug-sections=zlib /tmp/go-link-1004319805/go.o
/tmp/go-link-1004319805/000000.o /tmp/go-link-1004319805/000001.o
/tmp/go-link-1004319805/000002.o /tmp/go-link-1004319805/000003.o
/tmp/go-link-1004319805/000004.o /tmp/go-link-1004319805/000005.o
/tmp/go-link-1004319805/000006.o /tmp/go-link-1004319805/000007.o
/tmp/go-link-1004319805/000008.o /tmp/go-link-1004319805/000009.o
/tmp/go-link-1004319805/000010.o /tmp/go-link-1004319805/000011.o
/tmp/go-link-1004319805/000012.o /tmp/go-link-1004319805/000013.o
/tmp/go-link-1004319805/000014.o /tmp/go-link-1004319805/000015.o
/tmp/go-link-1004319805/000016.o -O2 -g -O2 -g -lpthread -no-pie
lto1: error: qsort comparator non-negative on sorted output: 10
during IPA pass: static-var
lto1: internal compiler error: qsort checking failed
0x1ef52d0 internal_error(char const*, ...)
../../src/gcc/diagnostic-global-context.cc:787
0x1ef5850 qsort_chk_error
../../src/gcc/vec.cc:272
0x6ceadc qsort_chk(void*, unsigned long, unsigned long, int
(*)(void const*, void const*, void*), void*)
../../src/gcc/vec.cc:314
0x22ad426 gcc_sort_r(void*, unsigned long, unsigned long, int
(*)(void const*, void const*, void*), void*)
../../src/gcc/sort.cc:296
0x282aba0 vec<symtab_node*, va_heap, vl_embed>::sort(int (*)(void
const*, void const*, void*), void*)
../../src/gcc/vec.h:1241
0x282aba0 vec<symtab_node*, va_heap, vl_ptr>::sort(int (*)(void
const*, void const*, void*), void*)
../../src/gcc/vec.h:2263
0x282aba0 lto_output()
../../src/gcc/lto-streamer-out.cc:2879
0xa8c022 write_lto
../../src/gcc/passes.cc:2793
0xa7c36e ipa_write_optimization_summaries(lto_symtab_encoder_d*,
bool)
../../src/gcc/passes.cc:2992
0x2822384 stream_out
../../src/gcc/lto/lto.cc:181
0x2822384 stream_out_partitions_1
../../src/gcc/lto/lto.cc:233
0x2784de2 stream_out_partitions
../../src/gcc/lto/lto.cc:269
0x2784de2 lto_wpa_write_files
../../src/gcc/lto/lto.cc:422
0x2784de2 do_whole_program_analysis
../../src/gcc/lto/lto.cc:601
0x2784de2 lto_main()
../../src/gcc/lto/lto.cc:675
/usr/libexec/gcc/x86_64-linux-gnu/16/lto1 -quiet -dumpbase
$WORK/b001/exe/a.wpa -m64 -mtune=generic -march=x86-64 -g -g -g -O2 -O2 -O2
-fno-openmp -fno-openacc -fPIC -fasynchronous-unwind-tables
-fcf-protection=full -fltrans-output-list=/tmp/ccOlxtfR.ltrans.out -fwpa
-fresolution=/tmp/ccwMSZW0.res -flinker-output=exec @/tmp/ccakbXAT
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-16/README.Bugs> for instructions.
lto-wrapper: fatal error: gcc returned 1 exit status
compilation terminated.
/usr/bin/x86_64-linux-gnu-ld.bfd: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
cgo_test.go:128: go build failed: exit status 1
cgo_test.go:146: failed
FAIL
FAIL cmd/link 35.363s
