[Bug 2142489] [NEW] GCC-14 internal compiler error with option -ftime-report dealing boost::multiprecision
Ziyou Wang
2142489 at bugs.launchpad.net
Mon Feb 23 16:07:26 UTC 2026
Public bug reported:
When compiling a source file that includes
<boost/multiprecision/cpp_int.hpp> (indirectly via CGAL headers in the
original case) with the -ftime-report flag, GCC crashes with an internal
compiler error at timevar.cc:490. The crash occurs during template
instantiation of boost::multiprecision::number.
The error does not occur if -ftime-report is omitted. Precompiled
headers are not used in this test case, the preprocessed file
(draw_surface_mesh.ii) is proveided as attachment.
1: gcc version: 14.2.0 (Ubuntu 14.2.0-4ubuntu2~24.04)
2: Boost version (boost/version.hpp): #define BOOST_VERSION 109000
3: CGAL version (CGAL/version): #define CGAL_VERSION 6.1.1
4: gcc options: COLLECT_GCC_OPTIONS='-std=gnu++23' '-c' '-o'
'draw_surface_mesh.o' '-isystem' '/home/azusa/file/libs/install/include'
'-I' '.' '-I' '..' '-ftime-report' '-v' '-save-temps' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
5: compelete command line: g++ -std=gnu++23 -c draw_surface_mesh.cpp -o
draw_surface_mesh.o -isystem /home/azusa/file/libs/install/include -I.
-I.. -ftime-report -v -save-temps
6: full output of compiler (line starting with '>' is user input):
> make
g++ -std=gnu++23 -c draw_surface_mesh.cpp -o draw_surface_mesh.o -isystem /home/azusa/file/libs/install/include -I. -I.. -ftime-report -v -save-temps
Using built-in specs.
COLLECT_GCC=g++
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 14.2.0-4ubuntu2~24.04' --with-bugurl=file:///usr/share/doc/gcc-14/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust --prefix=/usr --with-gcc-major-version-only --program-suffix=-14 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/gcc-14-ig5ci0/gcc-14-14.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-14-ig5ci0/gcc-14-14.2.0/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-build-config=bootstrap-lto-lean --enable-link-serialization=2
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.2.0 (Ubuntu 14.2.0-4ubuntu2~24.04)
COLLECT_GCC_OPTIONS='-std=gnu++23' '-c' '-o' 'draw_surface_mesh.o' '-isystem' '/home/azusa/file/libs/install/include' '-I' '.' '-I' '..' '-ftime-report' '-v' '-save-temps' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/libexec/gcc/x86_64-linux-gnu/14/cc1plus -E -quiet -v -I . -I .. -imultiarch x86_64-linux-gnu -D_GNU_SOURCE -isystem /home/azusa/file/libs/install/include draw_surface_mesh.cpp -mtune=generic -march=x86-64 -std=gnu++23 -ftime-report -fpch-preprocess -fasynchronous-unwind-tables -fstack-protector-strong -Wformat -Wformat-security -fstack-clash-protection -fcf-protection -o draw_surface_mesh.ii
ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/14"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/14/include-fixed/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/14/include-fixed"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
.
..
/home/azusa/file/libs/install/include
/usr/include/c++/14
/usr/include/x86_64-linux-gnu/c++/14
/usr/include/c++/14/backward
/usr/lib/gcc/x86_64-linux-gnu/14/include
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
Time variable usr sys wall GGC
phase setup : 1.27 (100%) 0.29 (100%) 1.43 (100%) 375M (100%)
|name lookup : 0.00 ( 0%) 0.01 ( 3%) 0.00 ( 0%) 166k ( 0%)
TOTAL : 1.27 0.29 1.43 375M
COLLECT_GCC_OPTIONS='-std=gnu++23' '-c' '-o' 'draw_surface_mesh.o' '-isystem' '/home/azusa/file/libs/install/include' '-I' '.' '-I' '..' '-ftime-report' '-v' '-save-temps' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/libexec/gcc/x86_64-linux-gnu/14/cc1plus -fpreprocessed draw_surface_mesh.ii -quiet -dumpbase draw_surface_mesh.cpp -dumpbase-ext .cpp -mtune=generic -march=x86-64 -std=gnu++23 -version -ftime-report -fasynchronous-unwind-tables -fstack-protector-strong -Wformat -Wformat-security -fstack-clash-protection -fcf-protection -o draw_surface_mesh.s
GNU C++23 (Ubuntu 14.2.0-4ubuntu2~24.04) version 14.2.0 (x86_64-linux-gnu)
compiled by GNU C version 14.2.0, GMP version 6.3.0, MPFR version 4.2.1, MPC version 1.3.1, isl version isl-0.26-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 15295618e53100c52860079ea59d3eac
In file included from /home/azusa/file/libs/install/include/boost/multiprecision/cpp_int.hpp:19,
from /home/azusa/file/libs/install/include/CGAL/Quotient.h:37,
from /home/azusa/file/libs/install/include/CGAL/Kernel_d/Cartesian_const_iterator_d.h:20,
from /home/azusa/file/libs/install/include/CGAL/Homogeneous/VectorH2.h:23,
from /home/azusa/file/libs/install/include/CGAL/Homogeneous/predicates_on_directionsH2.h:22,
from /home/azusa/file/libs/install/include/CGAL/Homogeneous/DirectionH2.h:99,
from /home/azusa/file/libs/install/include/CGAL/Homogeneous/Homogeneous_base.h:29,
from /home/azusa/file/libs/install/include/CGAL/Simple_homogeneous.h:20,
from /home/azusa/file/libs/install/include/CGAL/Exact_kernel_selector.h:24,
from /home/azusa/file/libs/install/include/CGAL/Filtered_kernel.h:22,
from /home/azusa/file/libs/install/include/CGAL/Exact_predicates_inexact_constructions_kernel.h:21,
from draw_surface_mesh.cpp:5:
/home/azusa/file/libs/install/include/boost/multiprecision/number.hpp: In instantiation of ‘struct boost::multiprecision::number<boost::multiprecision::backends::rational_adaptor<boost::multiprecision::backends::cpp_int_backend<> > >’:
/home/azusa/file/libs/install/include/CGAL/boost_mp_type.h:65:22: required from here
65 | if (denominator(x) != 1 )
| ^
/home/azusa/file/libs/install/include/boost/multiprecision/number.hpp:81:66: internal compiler error: in start, at timevar.cc:490
81 | && (boost::multiprecision::number_category<Backend>::value != boost::multiprecision::number_kind_complex)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x75ed4f62a1c9 __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
0x75ed4f62a28a __libc_start_main_impl
../csu/libc-start.c:360
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-14/README.Bugs> for instructions.
make: *** [Makefile:13: draw_surface_mesh.o] Error 1
7: preprocessed file: in attachment
** Affects: gcc-14 (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "preprocess file of the source file casuing bug"
https://bugs.launchpad.net/bugs/2142489/+attachment/5948051/+files/draw_surface_mesh.ii
--
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https://bugs.launchpad.net/bugs/2142489
Title:
GCC-14 internal compiler error with option -ftime-report dealing
boost::multiprecision
Status in gcc-14 package in Ubuntu:
New
Bug description:
When compiling a source file that includes
<boost/multiprecision/cpp_int.hpp> (indirectly via CGAL headers in the
original case) with the -ftime-report flag, GCC crashes with an
internal compiler error at timevar.cc:490. The crash occurs during
template instantiation of boost::multiprecision::number.
The error does not occur if -ftime-report is omitted. Precompiled
headers are not used in this test case, the preprocessed file
(draw_surface_mesh.ii) is proveided as attachment.
1: gcc version: 14.2.0 (Ubuntu 14.2.0-4ubuntu2~24.04)
2: Boost version (boost/version.hpp): #define BOOST_VERSION 109000
3: CGAL version (CGAL/version): #define CGAL_VERSION 6.1.1
4: gcc options: COLLECT_GCC_OPTIONS='-std=gnu++23' '-c' '-o'
'draw_surface_mesh.o' '-isystem'
'/home/azusa/file/libs/install/include' '-I' '.' '-I' '..' '-ftime-
report' '-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
5: compelete command line: g++ -std=gnu++23 -c draw_surface_mesh.cpp
-o draw_surface_mesh.o -isystem /home/azusa/file/libs/install/include
-I. -I.. -ftime-report -v -save-temps
6: full output of compiler (line starting with '>' is user input):
> make
g++ -std=gnu++23 -c draw_surface_mesh.cpp -o draw_surface_mesh.o -isystem /home/azusa/file/libs/install/include -I. -I.. -ftime-report -v -save-temps
Using built-in specs.
COLLECT_GCC=g++
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 14.2.0-4ubuntu2~24.04' --with-bugurl=file:///usr/share/doc/gcc-14/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust --prefix=/usr --with-gcc-major-version-only --program-suffix=-14 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/gcc-14-ig5ci0/gcc-14-14.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-14-ig5ci0/gcc-14-14.2.0/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-build-config=bootstrap-lto-lean --enable-link-serialization=2
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.2.0 (Ubuntu 14.2.0-4ubuntu2~24.04)
COLLECT_GCC_OPTIONS='-std=gnu++23' '-c' '-o' 'draw_surface_mesh.o' '-isystem' '/home/azusa/file/libs/install/include' '-I' '.' '-I' '..' '-ftime-report' '-v' '-save-temps' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/libexec/gcc/x86_64-linux-gnu/14/cc1plus -E -quiet -v -I . -I .. -imultiarch x86_64-linux-gnu -D_GNU_SOURCE -isystem /home/azusa/file/libs/install/include draw_surface_mesh.cpp -mtune=generic -march=x86-64 -std=gnu++23 -ftime-report -fpch-preprocess -fasynchronous-unwind-tables -fstack-protector-strong -Wformat -Wformat-security -fstack-clash-protection -fcf-protection -o draw_surface_mesh.ii
ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/14"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/14/include-fixed/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/14/include-fixed"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
.
..
/home/azusa/file/libs/install/include
/usr/include/c++/14
/usr/include/x86_64-linux-gnu/c++/14
/usr/include/c++/14/backward
/usr/lib/gcc/x86_64-linux-gnu/14/include
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
Time variable usr sys wall GGC
phase setup : 1.27 (100%) 0.29 (100%) 1.43 (100%) 375M (100%)
|name lookup : 0.00 ( 0%) 0.01 ( 3%) 0.00 ( 0%) 166k ( 0%)
TOTAL : 1.27 0.29 1.43 375M
COLLECT_GCC_OPTIONS='-std=gnu++23' '-c' '-o' 'draw_surface_mesh.o' '-isystem' '/home/azusa/file/libs/install/include' '-I' '.' '-I' '..' '-ftime-report' '-v' '-save-temps' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/libexec/gcc/x86_64-linux-gnu/14/cc1plus -fpreprocessed draw_surface_mesh.ii -quiet -dumpbase draw_surface_mesh.cpp -dumpbase-ext .cpp -mtune=generic -march=x86-64 -std=gnu++23 -version -ftime-report -fasynchronous-unwind-tables -fstack-protector-strong -Wformat -Wformat-security -fstack-clash-protection -fcf-protection -o draw_surface_mesh.s
GNU C++23 (Ubuntu 14.2.0-4ubuntu2~24.04) version 14.2.0 (x86_64-linux-gnu)
compiled by GNU C version 14.2.0, GMP version 6.3.0, MPFR version 4.2.1, MPC version 1.3.1, isl version isl-0.26-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 15295618e53100c52860079ea59d3eac
In file included from /home/azusa/file/libs/install/include/boost/multiprecision/cpp_int.hpp:19,
from /home/azusa/file/libs/install/include/CGAL/Quotient.h:37,
from /home/azusa/file/libs/install/include/CGAL/Kernel_d/Cartesian_const_iterator_d.h:20,
from /home/azusa/file/libs/install/include/CGAL/Homogeneous/VectorH2.h:23,
from /home/azusa/file/libs/install/include/CGAL/Homogeneous/predicates_on_directionsH2.h:22,
from /home/azusa/file/libs/install/include/CGAL/Homogeneous/DirectionH2.h:99,
from /home/azusa/file/libs/install/include/CGAL/Homogeneous/Homogeneous_base.h:29,
from /home/azusa/file/libs/install/include/CGAL/Simple_homogeneous.h:20,
from /home/azusa/file/libs/install/include/CGAL/Exact_kernel_selector.h:24,
from /home/azusa/file/libs/install/include/CGAL/Filtered_kernel.h:22,
from /home/azusa/file/libs/install/include/CGAL/Exact_predicates_inexact_constructions_kernel.h:21,
from draw_surface_mesh.cpp:5:
/home/azusa/file/libs/install/include/boost/multiprecision/number.hpp: In instantiation of ‘struct boost::multiprecision::number<boost::multiprecision::backends::rational_adaptor<boost::multiprecision::backends::cpp_int_backend<> > >’:
/home/azusa/file/libs/install/include/CGAL/boost_mp_type.h:65:22: required from here
65 | if (denominator(x) != 1 )
| ^
/home/azusa/file/libs/install/include/boost/multiprecision/number.hpp:81:66: internal compiler error: in start, at timevar.cc:490
81 | && (boost::multiprecision::number_category<Backend>::value != boost::multiprecision::number_kind_complex)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x75ed4f62a1c9 __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
0x75ed4f62a28a __libc_start_main_impl
../csu/libc-start.c:360
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-14/README.Bugs> for instructions.
make: *** [Makefile:13: draw_surface_mesh.o] Error 1
7: preprocessed file: in attachment
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