hello-opt segmentation fault

[benroywillis]

After successfully compiling mlir-hello on Ubuntu 18.04.4 LTS (with Linux kernel 4.15.0-101-generix x86_64) with the following configurations:

(using the llvm version in the update-llvm-2023-08-24 branch)
source ~/.unset ; $CMAKE ../llvm/ -G Ninja -DLLVM_ENABLE_PROJECTS="clang;polly;mlir;lld;openmp;lldb" -DCMAKE_INSTALL_PREFIX=/mnt/heorot-10/Installs/LLVM18/release/ -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_RTTI=ON -DLLVM_BUILD_EXAMPLES=ON -DLLVM_TARGETS_TO_BUILD="Native;NVPTX;AMDGPU" -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_INSTALL_UTILS=ON

Then I installed this LLVM build and set the environment to use it:
export LLVM_ROOT=${INSTALLS_HOME}LLVM18/release/
export CC=${LLVM_ROOT}bin/clang
export CXX=${LLVM_ROOT}bin/clang++
export LLD=${LLVM_ROOT}bin/ld.lld

mlir-hello:
$CMAKE ../ -G Ninja -DLLVM_DIR=/mnt/heorot-10/Installs/LLVM18/release/lib/cmake/llvm/ -DMLIR_DIR=/mnt/heorot-10/Installs/LLVM18/release/lib/cmake/mlir/
this builds mlir-hello successfully

When running build/bin/hello-opt on test/Hello/hello_world.mlir (and print.mlir) I get a segmentation fault.

Running with lldb, I get the following output:
$LLVM_ROOT/bin/lldb ./build/bin/hello-opt test/Hellow/hello_world.mlir(lldb) target create "./build/bin/hello-opt"
Current executable set to '/mnt/heorot-10/Builds/mlir-hello/build/bin/hello-opt' (x86_64).
(lldb) settings set -- target.run-args "test/Hellow/hello_world.mlir"
(lldb) r
Process 32290 launched: '/mnt/heorot-10/Builds/mlir-hello/build/bin/hello-opt' (x86_64)
Process 32290 stopped

• thread Catch up latest mlir #1, name = 'hello-opt', stop reason = signal SIGSEGV: address not mapped to object (fault address: 0x1)
  frame #0: 0x0000555558b702aa hello-optllvm::MemoryBuffer::getFileOrSTDIN(llvm::Twine const&, bool, bool, std::optional<llvm::Align>) + 138 hello-optllvm::MemoryBuffer::getFileOrSTDIN:
  -> 0x555558b702aa <+138>: movzbl 0x1(%r13), %r15d
  0x555558b702af <+143>: testb %r15b, %r15b
  0x555558b702b2 <+146>: je 0x555558b702c1 ; <+161>
  0x555558b702b4 <+148>: movzbl (%r13), %eax
  and the function call stack:
  (lldb) bt
• thread Catch up latest mlir #1, name = 'hello-opt', stop reason = signal SIGSEGV: address not mapped to object (fault address: 0x1)
  • frame #0: 0x0000555558b702aa hello-optllvm::MemoryBuffer::getFileOrSTDIN(llvm::Twine const&, bool, bool, std::optional<llvm::Align>) + 138 frame #1: 0x0000555555983ebc hello-optloadMLIR(context=0x00007fffffffd288, module=0x00007fffffffd280) at hello-opt.cpp:86:13
    frame Enable GitHub action to build project #2: 0x00005555559840d0 hello-optloadAndProcessMLIR(context=0x00007fffffffd288, module=0x00007fffffffd280) at hello-opt.cpp:103:19 frame #3: 0x00005555559844dd hello-optmain(argc=2, argv=0x00007fffffffd398) at hello-opt.cpp:162:19
    frame Build fails when looking for cmake dependencies "FileCheck", "count", "not", etc. #4: 0x00007ffff6652c87 libc.so.6__libc_start_main(main=(hello-optmain at hello-opt.cpp:152), argc=2, argv=0x00007fffffffd398, init=, fini=, rtld_fini=, stack_end=0x00007fffffffd388) at libc-start.c:310
    frame Add a script to compile everything #5: 0x0000555555983ada hello-opt`_start + 42