https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117519
Bug ID: 117519
Summary: LTO ICE when building gloox: lto1: internal compiler
error: symtab_node::verify failed
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: csfore at posteo dot net
Target Milestone: ---
Created attachment 59572
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59572&action=edit
original preprocessed clientbase.ii and instantmucroom.ii
Notes: -ansi is required, -fno-inline seems to be what is causing the ICE.
```
$ g++ clientbase.ii instantmucroom.ii -O2 -flto -fno-inline -ansi
lto1: error: Two symbols with same comdat_group are not linked by the
same_comdat_group list.
_ZN5gloox7MUCRoom8handleIqERKNS_2IQE/4950 (handleIq)
Type: function definition analyzed
Visibility: externally_visible semantic_interposition undef public weak
comdat comdat_group:_ZN5gloox7MUCRoom8handleIqERKNS_2IQE one_only
section:.text._ZN5gloox7MUCRoom8handleIqERKNS_2IQE (implicit_section) virtual
Address is taken.
References:
Referring: *.LTHUNK0/571 (alias) _ZTVN5gloox14InstantMUCRoomE/5920 (addr)
Read from file: /tmp/ccEI4KT2.o
Unit id: 2
Function flags: count:1073741824 (estimated locally)
Called by:
Calls:
_ZThn16_N5gloox7MUCRoom8handleIqERKNS_2IQE/572
(_ZThn16_N5gloox7MUCRoom8handleIqERKNS_2IQE)
Type: function definition analyzed
Visibility: externally_visible semantic_interposition prevailing_def_ironly
public weak comdat comdat_group:_ZN5gloox7MUCRoom8handleIqERKNS_2IQE one_only
section:.text._ZN5gloox7MUCRoom8handleIqERKNS_2IQE (implicit_section) virtual
artificial
Same comdat group as: *.LTHUNK0/571
Address is taken.
References:
Referring: _ZTVN5gloox14InstantMUCRoomE/5920 (addr)
Read from file: /tmp/cc6QyeIG.o
Unit id: 1
Function flags: calls_comdat_local merged_comdat indirect_call_target
Thunk fixed offset -16 virtual value 0 indirect_offset 0 has virtual offset 0
Called by:
Calls: *.LTHUNK0/571 (can throw external)
during IPA pass: modref
lto1: internal compiler error: symtab_node::verify failed
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
See <https://bugs.gentoo.org/> for instructions.
lto-wrapper: fatal error: g++ returned 1 exit status
compilation terminated.
/usr/lib/gcc/x86_64-pc-linux-gnu/15/../../../../x86_64-pc-linux-gnu/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status
```
--
```
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/15/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-15.0.0_pre20241103/work/gcc-15-20241103/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-languages=c,c++,go,fortran,rust --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=yes,extra
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened
15.0.0_pre20241103 p21' --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-libgomp --disable-libssp --disable-libada --enable-cet
--disable-systemtap --disable-valgrind-annotations --disable-vtable-verify
--disable-libvtv --with-zstd --without-isl --enable-default-pie
--enable-host-pie --enable-host-bind-now --enable-default-ssp
--disable-fixincludes --with-build-config='bootstrap-O3 bootstrap-cet'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20241103 (experimental) (Gentoo Hardened 15.0.0_pre20241103
p21)
```
