Segmentation fault when running NewPM

[vchuravy]

In EnzymeAD/Enzyme.jl#2675 I am seeing a "Bus Error" locally.

~/src/julia-1.12/julia -g2 --project=. -e "using Enzyme; autodiff(Forward, identity, Duplicated(1.0, 1.0
))"

[121250] signal 7 (128): Bus error
in expression starting at none:1
~_Function_base at /opt/x86_64-linux-gnu/x86_64-linux-gnu/include/c++/8.1.0/bits/std_function.h:256 [inlined]
~function at /opt/x86_64-linux-gnu/x86_64-linux-gnu/include/c++/8.1.0/bits/std_function.h:370 [inlined]
destroy_range at /opt/x86_64-linux-gnu/x86_64-linux-gnu/sys-root/usr/local/include/llvm/ADT/SmallVector.h:354 [inlined]
~SmallVector at /opt/x86_64-linux-gnu/x86_64-linux-gnu/sys-root/usr/local/include/llvm/ADT/SmallVector.h:1215 [inlined]
~PassBuilder at /opt/x86_64-linux-gnu/x86_64-linux-gnu/sys-root/usr/local/include/llvm/Passes/PassBuilder.h:104
runJuliaPasses at /workspace/srcdir/LLVM.jl/deps/LLVMExtra/lib/NewPM.cpp:157
LLVMRunJuliaPasses at /home/vchuravy/.julia/packages/LLVM/iza6e/lib/18/libLLVM_extra.jl:291 [inlined]
macro expansion at /home/vchuravy/.julia/packages/LLVM/iza6e/src/executionengine/utils.jl:25 [inlined]
run! at /home/vchuravy/.julia/packages/LLVM/iza6e/src/newpm.jl:291
jfptr_runNOT._19333 at /home/vchuravy/.julia/compiled/v1.12/GPUCompiler/yPwef_V4OgU.so (unknown line)
_jl_invoke at /home/vchuravy/src/julia-1.12/src/gf.c:3991
ijl_apply_generic at /home/vchuravy/src/julia-1.12/src/gf.c:4210
jl_apply at /home/vchuravy/src/julia-1.12/src/julia.h:2391
jl_f__apply_iterate at /home/vchuravy/src/julia-1.12/src/builtins.c:868
macro expansion at /home/vchuravy/.julia/packages/LLVM/iza6e/src/newpm.jl:303 [inlined]
macro expansion at /home/vchuravy/.julia/packages/LLVM/iza6e/src/base.jl:97 [inlined]
#run!#66 at /home/vchuravy/.julia/packages/LLVM/iza6e/src/newpm.jl:301
run! at /home/vchuravy/.julia/packages/LLVM/iza6e/src/newpm.jl:300
jfptr_runNOT._20805 at /home/vchuravy/.julia/compiled/v1.12/GPUCompiler/yPwef_V4OgU.so (unknown line)
_jl_invoke at /home/vchuravy/src/julia-1.12/src/gf.c:3991
ijl_apply_generic at /home/vchuravy/src/julia-1.12/src/gf.c:4210
macro expansion at /home/vchuravy/.julia/packages/GPUCompiler/Gp8bZ/src/driver.jl:339 [inlined]
macro expansion at /home/vchuravy/.julia/packages/Tracy/tYwAE/src/tracepoint.jl:163 [inlined]
#emit_llvm#92 at /home/vchuravy/.julia/packages/GPUCompiler/Gp8bZ/src/driver.jl:322
emit_llvm at /home/vchuravy/.julia/packages/GPUCompiler/Gp8bZ/src/driver.jl:182 [inlined]

LLVM.jl/deps/LLVMExtra/lib/NewPM.cpp

Line 157 in 90917c8

PassBuilder PB(Machine, PassOpts->PTO, std::nullopt, &PIC);

I am a bit confused why the PassBuilder deconstructor is running in that line, and why that triggers a bus error...