https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118973
Bug ID: 118973
Summary: [15 regression] ICE when building glog-0.6.0
(single_succ_edge, at basic-block.h:332)
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
Created attachment 60554
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60554&action=edit
logging_unittest.cc.ii.xz
```
$ g++ -O2 -c ./CMakeFiles/logging_unittest.dir/src/logging_unittest.cc.ii
during GIMPLE pass: local-fnsummary
/var/tmp/portage/dev-cpp/glog-0.6.0/work/glog-0.6.0/src/logging_unittest.cc: In
member function ‘virtual void DeathNoAllocNewHook_logging_Test::TestBody()’:
/var/tmp/portage/dev-cpp/glog-0.6.0/work/glog-0.6.0/src/logging_unittest.cc:1484:1:
internal compiler error: in single_succ_edge, at basic-block.h:332
1484 | }
| ^
0x5e81b6a8e901 internal_error(char const*, ...)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/diagnostic-global-context.cc:517
0x5e81b6a8ea9c fancy_abort(char const*, int, char const*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/diagnostic.cc:1722
0x5e81b52a4822 single_succ_edge(basic_block_def const*)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/basic-block.h:332
0x5e81b6eec986 builtin_unreachable_bb_p
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/ipa-fnsummary.cc:2711
0x5e81b6eec986 guards_builtin_unreachable
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/ipa-fnsummary.cc:2733
0x5e81b6eec986 find_necessary_statements
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/ipa-fnsummary.cc:2808
0x5e81b6ecdf88 analyze_function_body
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/ipa-fnsummary.cc:2934
0x5e81b6ebd262 compute_fn_summary(cgraph_node*, bool)
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/ipa-fnsummary.cc:3476
0x5e81b6ee3ce9 compute_fn_summary_for_current
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/ipa-fnsummary.cc:3506
0x5e81b6ee3ce9 execute
/usr/src/debug/sys-devel/gcc-15.0.9999/gcc-15.0.9999/gcc/ipa-fnsummary.cc:5161
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
2f960908caaad18d54ce7cb764ac470656e664c4' --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 15.0.1 20250220 (experimental)
d7ff3142821bd114ba925cb5a3778d973fe5335e (Gentoo Hardened 15.0.9999 p, commit
2f960908caaad18d54ce7cb764ac470656e664c4)
```
