https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116789
--- Comment #2 from Slobodkins, Arkadijs <aslobodkins at mail dot smu.edu> --- I must correct myself that I don't see this issue on gcc14. I only observe it on gcc13.2 and I did not try gcc13.3. Please let me know if anything else is needed. 1. The output of gcc-v. It was installed with sudo: Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/13/lto-wrapper OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 13.2.0-23ubuntu4' --with-bugurl=file:///usr/share/doc/gcc-13/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-13 --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-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-13-uJ7kn6/gcc-13-13.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-13-uJ7kn6/gcc-13-13.2.0/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 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 13.2.0 (Ubuntu 13.2.0-23ubuntu4) 2. I am using Ubuntu 24.04, but same issue occured on another system that uses Ubuntu 22.04. 3. The full output from the command line and compiler flags: make fixed_array debug=1 g++ -std=gnu++20 -DSTRICT_QUAD_PRECISION -DSTRICT_ERROR_EXCEPTIONS -g -fsanitize=address -O0 -Wall -Wextra -Wdeprecated -Wconversion -Wsign-conversion fixed_array.cpp -o fixed_array.x -lquadmath -lm In file included from ../src/Expr/array_expr1D.hpp:9, from ../src/strict_lib.hpp:8, from test.hpp:6, from fixed_array.cpp:8: ../src/Expr/../derived1D.hpp: In substitution of ‘template<class T, slib::ImplicitIntStatic sz> requires Builtin<T> using slib::FixedArray1D = slib::Derived1D<slib::FixedArrayBase1D<T, ((const slib::ImplicitIntStatic)N)> > [with slib::ImplicitIntStatic sz = T]’: fixed_array.cpp:64:4: required from here ../src/Expr/../derived1D.hpp:994:7: internal compiler error: Segmentation fault 994 | using FixedArray1D = Derived1D<FixedArrayBase1D<T, sz>>; | ^~~~~~~~~~~~ 0x75219da4531f ??? ./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0 0x75219da2a1c9 __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 0x75219da2a28a __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-13/README.Bugs> for instructions. make: *** [Makefile:54: fixed_array] Error 1