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Segfault from `NTuple{N,Base.RefValue{...}}` on Julia 1.7.1+ #55076

Open MilesCranmer opened 3 weeks ago

MilesCranmer commented 3 weeks ago

On Julia 1.7.1+, running the following valid code will cause a segfault and crash. Julia 1.7.0 is the last version which is not affected.

struct Node{D}
    children::NTuple{D,Base.RefValue{Node{D}}}
    Node(::Val{_D}) where {_D} = new{_D}()
end

Node(Val(2))

with the following traceback

``` [26695] signal (11.2): Segmentation fault: 11 in expression starting at /Users/mcranmer/PermaDocuments/SymbolicRegressionMonorepo/DynamicExpressions.jl/src/bug_report.jl:18 jl_compute_field_offsets at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/datatype.c:511 jl_struct_try_layout at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/datatype.c:342 [inlined] jl_datatype_isinlinealloc at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/datatype.c:349 [inlined] union_isinlinable at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/datatype.c:374 ijl_islayout_inline at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/datatype.c:397 [inlined] jl_compute_field_offsets at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/datatype.c:577 inst_datatype_inner at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jltypes.c:2193 inst_type_w_ at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jltypes.c:2484 inst_type_w_ at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jltypes.c:2438 inst_tuple_w_ at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jltypes.c:2315 inst_ftypes at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jltypes.c:2258 inst_datatype_inner at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jltypes.c:2182 inst_type_w_ at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jltypes.c:2484 ijl_instantiate_unionall at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jltypes.c:1456 [inlined] ijl_apply_type at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jltypes.c:1388 _jl_invoke at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:0 [inlined] ijl_apply_generic at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:3077 jl_apply at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/./julia.h:1982 [inlined] do_apply at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/builtins.c:768 apply_type_tfunc at ./compiler/tfuncs.jl:1860 _jl_invoke at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:0 [inlined] ijl_apply_generic at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:3077 jl_apply at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/./julia.h:1982 [inlined] do_apply at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/builtins.c:768 builtin_tfunction at ./compiler/tfuncs.jl:2480 abstract_call_builtin at ./compiler/abstractinterpretation.jl:1739 abstract_call_known at ./compiler/abstractinterpretation.jl:2014 abstract_call at ./compiler/abstractinterpretation.jl:2169 abstract_call at ./compiler/abstractinterpretation.jl:2162 abstract_call at ./compiler/abstractinterpretation.jl:2354 abstract_eval_call at ./compiler/abstractinterpretation.jl:2370 abstract_eval_statement_expr at ./compiler/abstractinterpretation.jl:2380 abstract_eval_statement at ./compiler/abstractinterpretation.jl:2624 abstract_eval_basic_statement at ./compiler/abstractinterpretation.jl:2913 typeinf_local at ./compiler/abstractinterpretation.jl:3098 typeinf_nocycle at ./compiler/abstractinterpretation.jl:3186 _typeinf at ./compiler/typeinfer.jl:247 typeinf at ./compiler/typeinfer.jl:216 typeinf_ext at ./compiler/typeinfer.jl:1051 typeinf_ext_toplevel at ./compiler/typeinfer.jl:1082 typeinf_ext_toplevel at ./compiler/typeinfer.jl:1078 jfptr_typeinf_ext_toplevel_35854.3 at /Users/mcranmer/.julia/juliaup/julia-1.10.4+0.aarch64.apple.darwin14/lib/julia/sys.dylib (unknown line) _jl_invoke at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:0 [inlined] ijl_apply_generic at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:3077 jl_apply at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/./julia.h:1982 [inlined] jl_type_infer at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:394 jl_generate_fptr_impl at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jitlayers.cpp:504 jl_compile_method_internal at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:2481 _jl_invoke at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:2887 [inlined] ijl_apply_generic at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:3077 jl_apply at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/./julia.h:1982 [inlined] do_call at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/interpreter.c:126 eval_body at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/interpreter.c:0 jl_interpret_toplevel_thunk at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/interpreter.c:775 jl_toplevel_eval_flex at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/toplevel.c:934 jl_toplevel_eval_flex at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/toplevel.c:877 ijl_toplevel_eval at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/toplevel.c:943 [inlined] ijl_toplevel_eval_in at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/toplevel.c:985 eval at ./boot.jl:385 [inlined] include_string at ./loading.jl:2076 _jl_invoke at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:0 [inlined] ijl_apply_generic at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:3077 _include at ./loading.jl:2136 include at ./Base.jl:495 jfptr_include_46536.3 at /Users/mcranmer/.julia/juliaup/julia-1.10.4+0.aarch64.apple.darwin14/lib/julia/sys.dylib (unknown line) _jl_invoke at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:0 [inlined] ijl_apply_generic at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:3077 exec_options at ./client.jl:318 _start at ./client.jl:552 jfptr__start_82857.3 at /Users/mcranmer/.julia/juliaup/julia-1.10.4+0.aarch64.apple.darwin14/lib/julia/sys.dylib (unknown line) _jl_invoke at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:0 [inlined] ijl_apply_generic at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/gf.c:3077 jl_apply at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/./julia.h:1982 [inlined] true_main at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jlapi.c:582 jl_repl_entrypoint at /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-XG3Q6T6R70.0/build/default-honeycrisp-XG3Q6T6R70-0/julialang/julia-release-1-dot-10/src/jlapi.c:731 Allocations: 2908 (Pool: 2901; Big: 7); GC: 0 ```

Other info:

julia> versioninfo()
Julia Version 1.10.4
Commit 48d4fd48430 (2024-06-04 10:41 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: macOS (arm64-apple-darwin22.4.0)
  CPU: 8 × Apple M1 Pro
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, apple-m1)
Threads: 6 default, 0 interactive, 3 GC (on 6 virtual cores)
Environment:
  JULIA_FORMATTER_SO = /Users/mcranmer/julia_formatter.so
  JULIA_NUM_THREADS = auto
  JULIA_OPTIMIZE = 3
  JULIA_EDITOR = code

I have reproduced this bug on the following versions, on the same machine:

However, the bug is not present on:

So the bug was created sometime between 1.7.0 and 1.7.1: https://github.com/JuliaLang/julia/compare/v1.7.0...v1.7.1

MilesCranmer commented 3 weeks ago

Could be this: https://github.com/JuliaLang/julia/pull/43306? I don't see any other matching changes.

nsajko commented 3 weeks ago

Reproducible without the internal RefValue:

julia> struct Node{D}
           children::NTuple{D,Memory{Node{D}}}
           Node(::Val{_D}) where {_D} = new{_D}()
       end

julia> Node(Val(2))

[225608] signal 11 (1): Segmentation fault
in expression starting at REPL[2]:1
jl_compute_field_offsets at /cache/build/builder-amdci5-7/julialang/julia-master/src/datatype.c:621
jl_struct_try_layout at /cache/build/builder-amdci5-7/julialang/julia-master/src/datatype.c:352 [inlined]
jl_struct_try_layout at /cache/build/builder-amdci5-7/julialang/julia-master/src/datatype.c:345
jl_datatype_isinlinealloc at /cache/build/builder-amdci5-7/julialang/julia-master/src/datatype.c:359
union_isinlinable at /cache/build/builder-amdci5-7/julialang/julia-master/src/datatype.c:384 [inlined]
union_isinlinable at /cache/build/builder-amdci5-7/julialang/julia-master/src/datatype.c:373 [inlined]
ijl_islayout_inline at /cache/build/builder-amdci5-7/julialang/julia-master/src/datatype.c:407
jl_get_genericmemory_layout at /cache/build/builder-amdci5-7/julialang/julia-master/src/datatype.c:506
jl_compute_field_offsets at /cache/build/builder-amdci5-7/julialang/julia-master/src/datatype.c:602
inst_datatype_inner at /cache/build/builder-amdci5-7/julialang/julia-master/src/jltypes.c:2238
MilesCranmer commented 3 weeks ago

:+1:

On 1.10.4 here is the lldb backtrace.

``` lldb -- ~/.julia/bin/julia-1.10 --startup-file=no src/bug_report.jl (lldb) target create "/Users/mcranmer/.julia/bin/julia-1.10" Current executable set to '/Users/mcranmer/.julia/bin/julia-1.10' (arm64). (lldb) settings set -- target.run-args "--startup-file=no" "src/bug_report.jl" (lldb) r Process 43606 launched: '/Users/mcranmer/.julia/bin/julia-1.10' (arm64) Process 43606 stopped * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0) frame #0: 0x0000000100a4ded4 libjulia-internal.1.10.4.dylib`jl_compute_field_offsets(st=0x000000010b293910) at datatype.c:511:25 [opt] (lldb) thread backtrace * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0) * frame #0: 0x0000000100a4ded4 libjulia-internal.1.10.4.dylib`jl_compute_field_offsets(st=0x000000010b293910) at datatype.c:511:25 [opt] frame #1: 0x0000000100a4ed74 libjulia-internal.1.10.4.dylib`union_isinlinable [inlined] jl_struct_try_layout(dt=0x000000010b293910) at datatype.c:342:5 [opt] frame #2: 0x0000000100a4ed60 libjulia-internal.1.10.4.dylib`union_isinlinable [inlined] jl_datatype_isinlinealloc(ty=0x000000010b293910, pointerfree=0) at datatype.c:349:37 [opt] frame #3: 0x0000000100a4ed3c libjulia-internal.1.10.4.dylib`union_isinlinable(ty=0x000000010b293910, pointerfree=0, nbytes=0x000000016fdf8aa8, align=0x000000016fdf8aa0, asfield=1) at datatype.c:374:31 [opt] frame #4: 0x0000000100a4e2dc libjulia-internal.1.10.4.dylib`jl_compute_field_offsets [inlined] ijl_islayout_inline(eltype=0x000000010b293910, fsz=0x000000016fdf8aa8, al=0x000000016fdf8aa0) at datatype.c:397:26 [opt] frame #5: 0x0000000100a4e2c4 libjulia-internal.1.10.4.dylib`jl_compute_field_offsets(st=) at datatype.c:577:17 [opt] frame #6: 0x0000000100a09460 libjulia-internal.1.10.4.dylib`inst_datatype_inner(dt=0x000000010b293010, p=, iparams=, ntp=, stack=0x000000016fdf8b78, env=, check=, nothrow=) at jltypes.c:2193:13 [opt] frame #7: 0x0000000100a0727c libjulia-internal.1.10.4.dylib`inst_type_w_(t=0x000000010b293010, env=0x000000016fdf92a8, stack=0x000000016fdf90e8, check=1, nothrow=) at jltypes.c:2484:13 [opt] frame #8: 0x0000000100a07490 libjulia-internal.1.10.4.dylib`inst_type_w_(t=0x000000010b20edd0, env=0x000000016fdf92a8, stack=0x000000016fdf90e8, check=1, nothrow=0) at jltypes.c:2438:17 [opt] frame #9: 0x0000000100a0eabc libjulia-internal.1.10.4.dylib`inst_tuple_w_(t=, env=0x000000016fdf92a8, stack=0x000000016fdf90e8, check=1, nothrow=0) at jltypes.c:2315:26 [opt] frame #10: 0x0000000100a07598 libjulia-internal.1.10.4.dylib`inst_type_w_(t=, env=, stack=, check=, nothrow=) at jltypes.c:2465:16 [opt] [artificial] frame #11: 0x0000000100a09b20 libjulia-internal.1.10.4.dylib`inst_ftypes(p=, env=0x000000016fdf92a8, stack=0x000000016fdf90e8) at jltypes.c:2258:18 [opt] frame #12: 0x0000000100a093a4 libjulia-internal.1.10.4.dylib`inst_datatype_inner(dt=0x000000010b292fd0, p=, iparams=, ntp=, stack=0x000000016fdf90e8, env=, check=, nothrow=) at jltypes.c:2182:30 [opt] frame #13: 0x0000000100a0727c libjulia-internal.1.10.4.dylib`inst_type_w_(t=0x000000010b292fd0, env=0x000000016fdf92a8, stack=0x0000000000000000, check=1, nothrow=) at jltypes.c:2484:13 [opt] frame #14: 0x0000000100a06ae4 libjulia-internal.1.10.4.dylib`ijl_apply_type [inlined] ijl_instantiate_unionall(u=0x000000010b20ecf0, p=0x0000000100044280) at jltypes.c:1456:12 [opt] frame #15: 0x0000000100a06ac0 libjulia-internal.1.10.4.dylib`ijl_apply_type(tc=, params=0x000000016fdf9400, n=1) at jltypes.c:1388:14 [opt] frame #16: 0x0000000100a17d7c libjulia-internal.1.10.4.dylib`ijl_apply_generic [inlined] _jl_invoke(F=0x000000011ed8f290, args=0x000000016fdf93f8, nargs=2, mfunc=0x000000011ba8e730, world=) at gf.c:0 [opt] frame #17: 0x0000000100a17d10 libjulia-internal.1.10.4.dylib`ijl_apply_generic(F=0x000000011ed8f290, args=0x000000016fdf93f8, nargs=) at gf.c:3077:12 [opt] frame #18: 0x0000000100a25ae4 libjulia-internal.1.10.4.dylib`do_apply [inlined] jl_apply(args=, nargs=3) at julia.h:1982:12 [opt] frame #19: 0x0000000100a25ad4 libjulia-internal.1.10.4.dylib`do_apply(args=0x000000016fdf9838, nargs=, iterate=0x000000011b5fb2c0) at builtins.c:768:26 [opt] frame #20: 0x000000011a12886c sys.dylib`japi1_apply_type_tfunc_33500.4 at tfuncs.jl:1860 frame #21: 0x0000000100a17d7c libjulia-internal.1.10.4.dylib`ijl_apply_generic [inlined] _jl_invoke(F=0x000000011b6529e0, args=0x000000016fdf9988, nargs=3, mfunc=0x000000011d9e5790, world=) at gf.c:0 [opt] frame #22: 0x0000000100a17d10 libjulia-internal.1.10.4.dylib`ijl_apply_generic(F=0x000000011b6529e0, args=0x000000016fdf9988, nargs=) at gf.c:3077:12 [opt] frame #23: 0x0000000100a25ae4 libjulia-internal.1.10.4.dylib`do_apply [inlined] jl_apply(args=, nargs=4) at julia.h:1982:12 [opt] frame #24: 0x0000000100a25ad4 libjulia-internal.1.10.4.dylib`do_apply(args=0x000000016fdf9c08, nargs=, iterate=0x000000011b5fb2c0) at builtins.c:768:26 [opt] frame #25: 0x000000011961ce38 sys.dylib`julia_builtin_tfunction_33790.4 at tfuncs.jl:2480 frame #26: 0x000000011aa531d4 sys.dylib`julia_abstract_call_builtin_34766.4 at abstractinterpretation.jl:1739 frame #27: 0x000000011921ed10 sys.dylib`julia_abstract_call_known_34880.4 at abstractinterpretation.jl:2014 frame #28: 0x0000000118bf112c sys.dylib`julia_abstract_call_35061.4 at abstractinterpretation.jl:2169 frame #29: 0x000000011abbf124 sys.dylib`julia_abstract_call_35089.4 at abstractinterpretation.jl:2162 frame #30: 0x0000000119fbe450 sys.dylib`julia_abstract_call_35053.4 at abstractinterpretation.jl:2354 frame #31: 0x000000011891d230 sys.dylib`julia_abstract_eval_call_35181.4 at abstractinterpretation.jl:2370 frame #32: 0x000000011a294f44 sys.dylib`julia_abstract_eval_statement_expr_35198.4 at abstractinterpretation.jl:2380 frame #33: 0x000000011947c060 sys.dylib`julia_abstract_eval_statement_35380.3 at abstractinterpretation.jl:2624 frame #34: 0x000000011a12ff08 sys.dylib`julia_abstract_eval_basic_statement_35465.3 at abstractinterpretation.jl:2913 frame #35: 0x000000011931d79c sys.dylib`julia_typeinf_local_35480.4 at abstractinterpretation.jl:3098 frame #36: 0x0000000119e88cfc sys.dylib`julia_typeinf_nocycle_35561.4 at abstractinterpretation.jl:3186 frame #37: 0x0000000118775218 sys.dylib`julia__typeinf_35602.4 at typeinfer.jl:247 frame #38: 0x00000001192f0220 sys.dylib`julia_typeinf_35570.4 at typeinfer.jl:216 frame #39: 0x000000011abb2030 sys.dylib`julia_typeinf_ext_35828.3 at typeinfer.jl:1051 frame #40: 0x00000001194827a8 sys.dylib`julia_typeinf_ext_toplevel_35858.3 at typeinfer.jl:1082 frame #41: 0x000000011a15f68c sys.dylib`julia_typeinf_ext_toplevel_35853.3 at typeinfer.jl:1078 frame #42: 0x0000000118aae738 sys.dylib`jfptr_typeinf_ext_toplevel_35854.3 + 56 frame #43: 0x0000000100a17d7c libjulia-internal.1.10.4.dylib`ijl_apply_generic [inlined] _jl_invoke(F=0x000000011f393cc0, args=0x000000016fdfbb28, nargs=2, mfunc=0x000000011da1ffe0, world=) at gf.c:0 [opt] frame #44: 0x0000000100a17d10 libjulia-internal.1.10.4.dylib`ijl_apply_generic(F=0x000000011f393cc0, args=0x000000016fdfbb28, nargs=) at gf.c:3077:12 [opt] frame #45: 0x0000000100a0fdcc libjulia-internal.1.10.4.dylib`jl_type_infer [inlined] jl_apply(args=, nargs=3) at julia.h:1982:12 [opt] frame #46: 0x0000000100a0fdc0 libjulia-internal.1.10.4.dylib`jl_type_infer(mi=0x000000010b24e2c0, world=31457, force=) at gf.c:394:32 [opt] frame #47: 0x000000010081a43c libjulia-codegen.1.10.4.dylib`jl_generate_fptr_impl(mi=0x000000010b24e2c0, world=31457, did_compile=0x000000016fdfbd9c) at jitlayers.cpp:504:19 [opt] frame #48: 0x0000000100a14b08 libjulia-internal.1.10.4.dylib`jl_compile_method_internal(mi=0x000000010b24e2c0, world=31457) at gf.c:2481:16 [opt] frame #49: 0x0000000100a17d44 libjulia-internal.1.10.4.dylib`ijl_apply_generic [inlined] _jl_invoke(F=0x000000010b20ecf0, args=0x000000016fdfbea8, nargs=1, mfunc=0x000000010b24e2c0, world=31457) at gf.c:2887:16 [opt] frame #50: 0x0000000100a17d10 libjulia-internal.1.10.4.dylib`ijl_apply_generic(F=0x000000010b20ecf0, args=0x000000016fdfbea8, nargs=) at gf.c:3077:12 [opt] frame #51: 0x0000000100a32484 libjulia-internal.1.10.4.dylib`do_call [inlined] jl_apply(args=, nargs=2) at julia.h:1982:12 [opt] frame #52: 0x0000000100a32474 libjulia-internal.1.10.4.dylib`do_call(args=, nargs=2, s=0x000000016fdfc0d0) at interpreter.c:126:26 [opt] frame #53: 0x0000000100a30c80 libjulia-internal.1.10.4.dylib`eval_body(stmts=0x000000010b24e1d0, s=0x000000016fdfc0d0, ip=1, toplevel=) at interpreter.c:0 [opt] frame #54: 0x0000000100a312a0 libjulia-internal.1.10.4.dylib`jl_interpret_toplevel_thunk(m=0x000000011f393cd0, src=) at interpreter.c:775:21 [opt] frame #55: 0x0000000100a497e4 libjulia-internal.1.10.4.dylib`jl_toplevel_eval_flex(m=0x000000011f393cd0, e=0x000000010b20e0d0, fast=1, expanded=) at toplevel.c:934:18 [opt] frame #56: 0x0000000100a495ac libjulia-internal.1.10.4.dylib`jl_toplevel_eval_flex(m=0x000000011f393cd0, e=0x000000010b20e210, fast=1, expanded=) at toplevel.c:877:19 [opt] frame #57: 0x0000000100a4a494 libjulia-internal.1.10.4.dylib`ijl_toplevel_eval_in [inlined] ijl_toplevel_eval(m=0x000000011f393cd0, v=0x000000010b20e210) at toplevel.c:943:12 [opt] frame #58: 0x0000000100a4a488 libjulia-internal.1.10.4.dylib`ijl_toplevel_eval_in(m=0x000000011f393cd0, ex=0x000000010b20e210) at toplevel.c:985:13 [opt] frame #59: 0x000000011a2db0e8 sys.dylib`japi1_include_string_81110.4 at boot.jl:385 frame #60: 0x0000000100a17d7c libjulia-internal.1.10.4.dylib`ijl_apply_generic [inlined] _jl_invoke(F=0x000000011e7b8b30, args=0x000000016fdfc900, nargs=4, mfunc=0x000000011e7b98b0, world=) at gf.c:0 [opt] frame #61: 0x0000000100a17d10 libjulia-internal.1.10.4.dylib`ijl_apply_generic(F=0x000000011e7b8b30, args=0x000000016fdfc900, nargs=) at gf.c:3077:12 [opt] frame #62: 0x000000011ac9fd48 sys.dylib`japi1__include_81118.4 at loading.jl:2136 frame #63: 0x00000001188fc09c sys.dylib`julia_include_46535.3 at Base.jl:495 frame #64: 0x0000000119456dc0 sys.dylib`jfptr_include_46536.3 + 60 frame #65: 0x0000000100a17d7c libjulia-internal.1.10.4.dylib`ijl_apply_generic [inlined] _jl_invoke(F=0x000000011b6d2eb0, args=0x000000016fdfe530, nargs=2, mfunc=0x000000011b6d3470, world=) at gf.c:0 [opt] frame #66: 0x0000000100a17d10 libjulia-internal.1.10.4.dylib`ijl_apply_generic(F=0x000000011b6d2eb0, args=0x000000016fdfe530, nargs=) at gf.c:3077:12 [opt] frame #67: 0x00000001183f5b34 sys.dylib`julia_exec_options_82718.4 at client.jl:318 frame #68: 0x0000000118fa6ab4 sys.dylib`julia__start_82856.3 at client.jl:552 frame #69: 0x0000000119b04bf4 sys.dylib`jfptr__start_82857.3 + 36 frame #70: 0x0000000100a17d7c libjulia-internal.1.10.4.dylib`ijl_apply_generic [inlined] _jl_invoke(F=0x000000011b5a1d30, args=0x000000016fdfea58, nargs=0, mfunc=0x000000011b5a1bc0, world=) at gf.c:0 [opt] frame #71: 0x0000000100a17d10 libjulia-internal.1.10.4.dylib`ijl_apply_generic(F=0x000000011b5a1d30, args=0x000000016fdfea58, nargs=) at gf.c:3077:12 [opt] frame #72: 0x0000000100a75910 libjulia-internal.1.10.4.dylib`true_main [inlined] jl_apply(args=0x000000016fdfea50, nargs=1) at julia.h:1982:12 [opt] frame #73: 0x0000000100a758fc libjulia-internal.1.10.4.dylib`true_main(argc=, argv=) at jlapi.c:582:13 [opt] frame #74: 0x0000000100a75804 libjulia-internal.1.10.4.dylib`jl_repl_entrypoint(argc=, argv=) at jlapi.c:731:15 [opt] frame #75: 0x0000000100003f6c julia-1.10`main + 12 frame #76: 0x00000001847ed0e0 dyld`start + 2360 ```

On nightly, this line is https://github.com/JuliaLang/julia/blob/ed987f2603fd96f5ff07f26189b160dd538b7d6e/src/datatype.c#L621