Problem compiling simple function using Eigen

[alpinito1]

Dear all,

I am struggling to compile a basic function that used Eigen.

The function basically computes the norm of a matrix and returns this value multiplied by a constant value.

In my local setup (Ubuntu) the compilation hangs and I don't know why.

I tried to use the explorer but I get a compilation error that I don't understand :

Stack dump:
0. Program arguments: /usr/lib/llvm-16/bin/clang -cc1 -triple x86_64-pc-linux-gnu -emit-obj -mrelax-all -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name example.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -fno-verbose-asm -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -mllvm -treat-scalable-fixed-error-as-warning -debug-info-kind=constructor -dwarf-version=5 -debugger-tuning=gdb -v -fcoverage-compilation-dir=/tmp/compiler-explorer-compilerdcJvxF -resource-dir /usr/lib/llvm-16/lib/clang/16 -isystem /opt/compiler-explorer/libs/eigen/v3.4.0 -I /opt/compiler-explorer/libraries/include -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../include/x86_64-linux-gnu/c++/13 -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/backward -internal-isystem /usr/lib/llvm-16/lib/clang/16/include -internal-isystem /usr/local/include -internal-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/13/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -std=c++17 -fdeprecated-macro -fdebug-compilation-dir=/tmp/compiler-explorer-compilerdcJvxF -ferror-limit 19 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -fcolor-diagnostics -load /opt/compiler-explorer/main/ClangEnzyme-16.so -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/example-96ce49.o -x c++

1. parser at end of file
2. Optimizer
   clang: error: unable to execute command: Segmentation fault (core dumped)
   clang: error: clang frontend command failed due to signal (use -v to see invocation)
   Compiler returned: 254

You have the example here : https://tinyurl.com/28x9c5rm

Do you guys have any hint of where the problem could come from ?

Thanks,