https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123240
Bug ID: 123240
Summary: [16 Regression] ice during IPA pass: cp with -O3 and
-fopenmp
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 63111
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63111&action=edit
gzipped C source code
The attached C code does this with recent gcc:
foundBugs $ ../results/bin/gcc -c -w -O3 -fopenmp bug1165.c
during IPA pass: cp
../lib/src/gretl_matrix.c:16119:1: internal compiler error: Segmentation fault
0x1f842f7 internal_error
/home/dcb42/gcc/working/gcc/../../trunk/gcc/diagnostic-global-context.cc:787
0xc74b39 ???
/home/dcb42/gcc/working/gcc/../../trunk/gcc/toplev.cc:325
0x917a19 exists
../../trunk/gcc/symbol-summary.h:902
0x917a19 get
../../trunk/gcc/symbol-summary.h:881
0x917a19 duplicate
/home/dcb42/gcc/working/gcc/../../trunk/gcc/ipa-fnsummary.cc:901
0x644dec ???
/home/dcb42/gcc/working/gcc/../../trunk/gcc/cgraph.cc:650
0x65d233 create_virtual_clone
/home/dcb42/gcc/working/gcc/../../trunk/gcc/cgraphclones.cc:745
Compiler is
foundBugs $ ../results/bin/gcc -v
Using built-in specs.
COLLECT_GCC=../results/bin/gcc
COLLECT_LTO_WRAPPER=/home/dcb42/gcc/results.20251219.asan.ubsan/libexec/gcc/x86_64-pc-linux-gnu/16.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../trunk/configure
--prefix=/home/dcb42/gcc/results.20251219.asan.ubsan --disable-bootstrap
--disable-doc --disable-multilib --with-build-config='bootstrap-asan
bootstrap-ubsan' --with-pkgversion=d4e6fc510f90b0e6 --with-isl
--enable-checking=df,extra,fold,rtl,yes --enable-languages=c,c++,fortran
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.0.0 20251219 (experimental) (d4e6fc510f90b0e6)
foundBugs $
The bug first seems to appear sometime before g:ebabae605093e5a3
and is a regression from 15.2.0
foundBugs $ ../results.15.2.0/bin/gcc -c -w -O3 -fopenmp bug1165.c
foundBugs $ ../results.20251121.asan.ubsan/bin/gcc -c -w -O3 -fopenmp bug1165.c
during IPA pass: cp
../lib/src/gretl_matrix.c:16119:1: internal compiler error: Segmentation fault
0x1f96c07 internal_error
/home/dcb42/gcc/working/gcc/../../trunk/gcc/diagnostic-global-context.cc:787
0xc69a19 ???
/home/dcb42/gcc/working/gcc/../../trunk/gcc/toplev.cc:325
0x911d09 exists
../../trunk/gcc/symbol-summary.h:902
0x911d09 get
../../trunk/gcc/symbol-summary.h:881
0x911d09 duplicate
/home/dcb42/gcc/working/gcc/../../trunk/gcc/ipa-fnsummary.cc:901
0x6416bc ???
/home/dcb42/gcc/working/gcc/../../trunk/gcc/cgraph.cc:650
0x6594e3 create_virtual_clone
/home/dcb42/gcc/working/gcc/../../trunk/gcc/cgraphclones.cc:728
I will run a reduction.
