Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Weird stackoverflow in inner constructor w/ use of const variable #22787

Closed
quinnj opened this issue Jul 13, 2017 · 19 comments
Closed

Weird stackoverflow in inner constructor w/ use of const variable #22787

quinnj opened this issue Jul 13, 2017 · 19 comments
Assignees
@JeffBezanson
Labels
compiler:inference Type inference regression Regression in behavior compared to a previous version types and dispatch Types, subtyping and method dispatch
Milestone
1.6.0

Comments

@quinnj
Copy link
Member

quinnj commented Jul 13, 2017

Latest master, OSX

julia> sz = 3576
3576

julia> struct works
           data::NTuple{sz, UInt8}
           works() = new(ntuple(x->0x00, sz))
       end

julia> @time works()
  0.034114 seconds (27.93 k allocations: 1.803 MiB)

and

julia> const sz2 = 3576
3576

julia> struct doesntwork
           data::NTuple{sz2, UInt8}
           doesntwork() = new(ntuple(x->0x00, sz2))
       end

julia> @time doesntwork()
Internal error: encountered unexpected error in runtime:
StackOverflowError()
intersect at /Users/jacobquinn/julia/src/subtype.c:1897
intersect_unionall_ at /Users/jacobquinn/julia/src/subtype.c:1510
intersect_unionall at /Users/jacobquinn/julia/src/subtype.c:1555
intersect at /Users/jacobquinn/julia/src/subtype.c:1914
intersect_ufirst at /Users/jacobquinn/julia/src/subtype.c:1189 [inlined]
intersect_var at /Users/jacobquinn/julia/src/subtype.c:1244
intersect_invariant at /Users/jacobquinn/julia/src/subtype.c:1759
intersect at /Users/jacobquinn/julia/src/subtype.c:1999
intersect_tuple at /Users/jacobquinn/julia/src/subtype.c:1657 [inlined]
intersect at /Users/jacobquinn/julia/src/subtype.c:1965
intersect_unionall_ at /Users/jacobquinn/julia/src/subtype.c:1510
intersect_unionall at /Users/jacobquinn/julia/src/subtype.c:1555
intersect at /Users/jacobquinn/julia/src/subtype.c:1914
intersect_all at /Users/jacobquinn/julia/src/subtype.c:2035
jl_type_intersection_env_s at /Users/jacobquinn/julia/src/subtype.c:2139
jl_typemap_intersection_node_visitor at /Users/jacobquinn/julia/src/typemap.c:481
jl_typemap_intersection_visitor at /Users/jacobquinn/julia/src/typemap.c:545
jl_typemap_intersection_visitor at /Users/jacobquinn/julia/src/typemap.c:536
ml_matches at /Users/jacobquinn/julia/src/gf.c:2381
jl_matching_methods at /Users/jacobquinn/julia/src/gf.c:1615
abstract_call_gf_by_type at ./inference.jl:1650
...
...
...
@vtjnash
Copy link
Member

vtjnash commented Jul 13, 2017

We need to fix inference to be non-recursive in order to handle all of the recursive functions in base defined on tuples (in this case, the one that gets it into trouble is code_typed(convert, (Type{NTuple{sz, UInt8}}, Tuple{Vararg{UInt8}})), where sz >≈ 1000). I think this is blocked on changing to a very linear IR however.

@vtjnash vtjnash added the compiler:inference Type inference label Jul 13, 2017
@vtjnash
Copy link
Member

vtjnash commented Mar 13, 2020

Both are broken now inside inference

@NHDaly
Copy link
Member

NHDaly commented Oct 14, 2020

Was this fixed? On my machine on latest master (a1da84c) actually both of @quinnj's examples work for me! :)

However, i'm here because I did see almost this exact same error newly show up during type inference for a part of our system that uses JuMP. It was succeeding on julia 1.5, but now fails with a StackOverflow inside inference as of a recent master.

Internal error: encountered unexpected error in runtime:
StackOverflowError()
intersect at /Users/nathandaly/src/julia/src/subtype.c:0
intersect_invariant at /Users/nathandaly/src/julia/src/subtype.c:2813
intersect at /Users/nathandaly/src/julia/src/subtype.c:3065
intersect at /Users/nathandaly/src/julia/src/subtype.c:0
intersect_all at /Users/nathandaly/src/julia/src/subtype.c:3110
intersect_var at /Users/nathandaly/src/julia/src/subtype.c:0
...
intersect at /Users/nathandaly/src/julia/src/subtype.c:0
intersect_unionall_ at /Users/nathandaly/src/julia/src/subtype.c:2565
intersect_unionall at /Users/nathandaly/src/julia/src/subtype.c:2616
intersect at /Users/nathandaly/src/julia/src/subtype.c:2989
intersect_all at /Users/nathandaly/src/julia/src/subtype.c:3134
jl_type_intersection_env_s at /Users/nathandaly/src/julia/src/subtype.c:3342
jl_type_intersection2 at /Users/nathandaly/src/julia/src/gf.c:1557
ml_matches at /Users/nathandaly/src/julia/src/gf.c:2874
jl_matching_methods at /Users/nathandaly/src/julia/src/gf.c:1839
_methods_by_ftype at ./reflection.jl:815 [inlined]
#findall#208 at ./compiler/methodtable.jl:55 [inlined]
findall##kw at ./compiler/methodtable.jl:52
jfptr_findallYY.YY.kw_9981 at /Users/nathandaly/src/julia/usr/lib/julia/sys.dylib (unknown line)
_jl_invoke at /Users/nathandaly/src/julia/src/gf.c:0 [inlined]
jl_apply_generic at /Users/nathandaly/src/julia/src/gf.c:2373
#210 at ./compiler/methodtable.jl:65
...
typeinf_local at ./compiler/abstractinterpretation.jl:1386
typeinf_nocycle at ./compiler/abstractinterpretation.jl:1442
_typeinf at ./compiler/typeinfer.jl:205
typeinf at ./compiler/typeinfer.jl:200
typeinf_ext at ./compiler/typeinfer.jl:824
typeinf_ext_toplevel at ./compiler/typeinfer.jl:857
typeinf_ext_toplevel at ./compiler/typeinfer.jl:853
jfptr_typeinf_ext_toplevel_12121 at /Users/nathandaly/src/julia/usr/lib/julia/sys.dylib (unknown line)
_jl_invoke at /Users/nathandaly/src/julia/src/gf.c:0 [inlined]
jl_apply_generic at /Users/nathandaly/src/julia/src/gf.c:2373
jl_apply at /Users/nathandaly/src/julia/src/./julia.h:1690 [inlined]
jl_type_infer at /Users/nathandaly/src/julia/src/gf.c:300
jl_generate_fptr at /Users/nathandaly/src/julia/src/jitlayers.cpp:316
jl_compile_method_internal at /Users/nathandaly/src/julia/src/gf.c:1924
_jl_invoke at /Users/nathandaly/src/julia/src/gf.c:2183 [inlined]
jl_apply_generic at /Users/nathandaly/src/julia/src/gf.c:2373
attach_optimizer at /Users/nathandaly/.julia/packages/MathOptInterface/k7UUH/src/Utilities/cachingoptimizer.jl:150
optimize! at /Users/nathandaly/.julia/packages/MathOptInterface/k7UUH/src/Utilities/cachingoptimizer.jl:211
_jl_invoke at /Users/nathandaly/src/julia/src/gf.c:0 [inlined]
jl_apply_generic at /Users/nathandaly/src/julia/src/gf.c:2373
#optimize!#100 at /Users/nathandaly/.julia/packages/JuMP/e0Uc2/src/optimizer_interface.jl:130
optimize! at /Users/nathandaly/.julia/packages/JuMP/e0Uc2/src/optimizer_interface.jl:106 [inlined]
optimize! at /Users/nathandaly/.julia/packages/JuMP/e0Uc2/src/optimizer_interface.jl:106 [inlined]

@vtjnash
Copy link
Member

vtjnash commented Oct 14, 2020 •
edited
Loading

I think c604df0 fixed the examples here. You'd probably need to poke at this in a debugger (same gdb below) to figure out what that case is (probably not quite the same as this).

thread 1
frame 10 # up or down
print x
print y
thread 2
p jl_(x)
p jl_(y)

Also helpful is doing negative backtraces:

bt -150
frame #####

@Sacha0
Copy link
Member

Sacha0 commented Oct 16, 2020

Partial reduction of the case we've hit:

using JuMP
using Clp
using MathOptInterface

function fluff!(m::MathOptInterface.Utilities.CachingOptimizer)
    MathOptInterface.Utilities.attach_optimizer(m)
    # Without the following call, this segfaults.
    # With the following call, this stack overflows.
    # With or without this call, it's a party.
    MOI.optimize!(m.optimizer)
end

model_backend = backend(Model(Clp.Optimizer))
fluff!(model_backend)

@Sacha0
Copy link
Member

Sacha0 commented Oct 16, 2020

Interestingly optimization level appears to impact segfault versus stackoverflow behavior: The comments above apply at O1, but at O2 it's stackoverflows all around.

@Sacha0
Copy link
Member

Sacha0 commented Oct 16, 2020 •
edited
Loading

Further reduction

# Segfault repro at O1 / stackoverflow at O2
using JuMP
using Clp
using MathOptInterface

model = backend(Model(Clp.Optimizer))
MOI.copy_to(model.optimizer, model.model_cache, copy_names=false)

@Sacha0 Sacha0 mentioned this issue Oct 18, 2020
Closed
@NHDaly
Copy link
Member

NHDaly commented Oct 20, 2020

(Also, for clarification, the above stackoverflow we're seeing is new as of julia 1.6, and wasn't occurring in 1.5.)

@chriscoey
Copy link

I just hit this bug like this i think (on 1.6 dev)

...
jfptr_typeinf_ext_toplevel_13560 at /home/ptah/julia/usr/lib/julia/sys.so (unknown line)
_jl_invoke at /home/ptah/julia/src/gf.c:2191 [inlined]
jl_apply_generic at /home/ptah/julia/src/gf.c:2373
jl_apply at /home/ptah/julia/src/julia.h:1690 [inlined]
jl_type_infer at /home/ptah/julia/src/gf.c:300
jl_generate_fptr at /home/ptah/julia/src/jitlayers.cpp:316
jl_compile_method_internal at /home/ptah/julia/src/gf.c:1924
jl_compile_method_internal at /home/ptah/julia/src/gf.c:1878 [inlined]
_jl_invoke at /home/ptah/julia/src/gf.c:2183 [inlined]
jl_apply_generic at /home/ptah/julia/src/gf.c:2373
attach_optimizer at /home/ptah/.julia/packages/MathOptInterface/k7UUH/src/Utilities/cachingoptimizer.jl:150
_jl_invoke at /home/ptah/julia/src/gf.c:2191 [inlined]
jl_apply_generic at /home/ptah/julia/src/gf.c:2373
#setup_model#2 at /home/ptah/.julia/dev/Hypatia/examples/common_JuMP.jl:76
unknown function (ip: 0x7f685e1fdbff)
_jl_invoke at /home/ptah/julia/src/gf.c:2191 [inlined]
jl_apply_generic at /home/ptah/julia/src/gf.c:2373
setup_model at /home/ptah/.julia/dev/Hypatia/examples/common_JuMP.jl:61
unknown function (ip: 0x7f685e1fb0d9)
_jl_invoke at /home/ptah/julia/src/gf.c:2191 [inlined]
...

and so on

@Sacha0
Copy link
Member

Sacha0 commented Oct 21, 2020

The MRE in #22787 (comment) allowed me to bisect the stack overflow to 51592ab, i.e. #37616. @vtjnash, any thoughts? :)

@NHDaly
Copy link
Member

NHDaly commented Oct 21, 2020 •
edited
Loading

If it's helpful, I just ran @snoopi_deep on the function that stackoverflows, and this leaves the internal timings array in a state that shows the stack trace of methods it was in the middle of inferring when it threw the error. So we can go back and look at all the nodes currently in the stack to print out the stack trace of where it failed. I'll paste that here in case it's useful:

julia> timing = SnoopCompileCore.@snoopi_deep begin
           @eval TPCH.run_query(conf, 17)
       end
2020:10:20 22:24:59 [ tpch | info ] running Q17
Internal error: encountered unexpected error in runtime:
StackOverflowError()
intersect at /Users/nathandaly/src/julia/src/subtype.c:2965
intersect_all at /Users/nathandaly/src/julia/src/subtype.c:3110
intersect_var at /Users/nathandaly/src/julia/src/subtype.c:0
...

julia> show(stdout, MIME"text/plain"(), [node.mi_info for node in Core.Compiler.Timings._timings])
37-element Vector{Core.Compiler.Timings.InferenceFrameInfo}:
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for ROOT(), 0x0000000000000000, Any[], Any[])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for (::MathOptInterface.var"#copy_to##kw")(::NamedTuple{(:copy_names,), Tuple{Bool}}, ::typeof(MathOptInterface.copy_to), ::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}), 0x00000000000072ed, Any[], Any[NamedTuple{(:copy_names,), Tuple{Bool}}, Core.Const(MathOptInterface.copy_to), MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for #copy_to#3(::Base.Iterators.Pairs{Symbol, Bool, Tuple{Symbol}, NamedTuple{(:copy_names,), Tuple{Bool}}}, ::typeof(MathOptInterface.copy_to), ::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}), 0x00000000000072ed, Any[], Any[Base.Iterators.Pairs{Symbol, Bool, Tuple{Symbol}, NamedTuple{(:copy_names,), Tuple{Bool}}}, Core.Const(MathOptInterface.copy_to), MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for (::MathOptInterface.Utilities.var"#automatic_copy_to##kw")(::NamedTuple{(:copy_names,), Tuple{Bool}}, ::typeof(MathOptInterface.Utilities.automatic_copy_to), ::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}), 0x00000000000072ed, Any[], Any[NamedTuple{(:copy_names,), Tuple{Bool}}, Core.Const(MathOptInterface.Utilities.automatic_copy_to), MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for #automatic_copy_to#113(::Bool, ::Nothing, ::typeof(MathOptInterface.Utilities.automatic_copy_to), ::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}), 0x00000000000072ed, Any[], Any[Bool, Core.Const(nothing), Core.Const(MathOptInterface.Utilities.automatic_copy_to), MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for default_copy_to(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, ::Bool, ::Nothing), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, Bool, Core.Const(nothing), Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for try_constrain_variables_on_creation(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, ::MathOptInterface.Utilities.IndexMap, ::typeof(MathOptInterface.add_constrained_variables), ::typeof(MathOptInterface.add_constrained_variable)), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, MathOptInterface.Utilities.IndexMap, Core.Const(MathOptInterface.add_constrained_variables), Core.Const(MathOptInterface.add_constrained_variable), Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for copy_vector_of_variables(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, ::MathOptInterface.Utilities.IndexMap, ::Type{var"#s248"} where var"#s248"<:MathOptInterface.AbstractSet, ::typeof(MathOptInterface.add_constrained_variables)), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, MathOptInterface.Utilities.IndexMap, Type{var"#s248"} where var"#s248"<:MathOptInterface.AbstractSet, Core.Const(MathOptInterface.add_constrained_variables), Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_constrained_variables(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.AbstractVectorSet), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.AbstractVectorSet, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_variables(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::Any), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, Any, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_constrained_variables(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Reals), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_keys_for_bridge(::MathOptInterface.Bridges.Variable.Map, ::MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType}, ::MathOptInterface.Reals), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.Variable.Map, MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType}, MathOptInterface.Reals, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for call_in_context(::MathOptInterface.Bridges.Variable.Map, ::Int64, ::MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType}), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.Variable.Map, Int64, MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for (::MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType})(), 0x00000000000072ed, Any[], Any[])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for bridge_constrained_variable(::Type{MathOptInterface.Bridges.Variable.FreeBridge{T}}, ::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Reals) where T, 0x00000000000072ed, Any[Any], Any[Type{MathOptInterface.Bridges.Variable.FreeBridge{T}} where T, MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_constrained_variables(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Nonnegatives), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Nonnegatives, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_keys_for_bridge(::MathOptInterface.Bridges.Variable.Map, ::MathOptInterface.Bridges.var"#78#79", ::MathOptInterface.Nonnegatives), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.Variable.Map, MathOptInterface.Bridges.var"#78#79", MathOptInterface.Nonnegatives, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for unbridged_map(::MathOptInterface.Bridges.Variable.SOCtoRSOCBridge{T}, ::Vector{MathOptInterface.VariableIndex}) where T, 0x00000000000072ed, Any[Any], Any[MathOptInterface.Bridges.Variable.SOCtoRSOCBridge, Vector{MathOptInterface.VariableIndex}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for rotate_unbridged_map(::Type, ::Vector{MathOptInterface.VariableIndex}, ::Vector{MathOptInterface.VariableIndex}), 0x00000000000072ed, Any[], Any[Type, Vector{MathOptInterface.VariableIndex}, Vector{MathOptInterface.VariableIndex}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for copy_single_variable(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, ::MathOptInterface.Utilities.IndexMap, ::Type{MathOptInterface.GreaterThan{Float64}}, ::typeof(MathOptInterface.add_constrained_variable)), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}, MathOptInterface.Utilities.IndexMap, Core.Const(MathOptInterface.GreaterThan{Float64}), Core.Const(MathOptInterface.add_constrained_variable), Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_constrained_variable(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.GreaterThan{Float64}), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.GreaterThan{Float64}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_key_for_bridge(::MathOptInterface.Bridges.Variable.Map, ::MathOptInterface.Bridges.var"#80#81"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.GreaterThan{Float64}, DataType}, ::MathOptInterface.GreaterThan{Float64}), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.Variable.Map, MathOptInterface.Bridges.var"#80#81"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.GreaterThan{Float64}, DataType}, MathOptInterface.GreaterThan{Float64}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for call_in_context(::MathOptInterface.Bridges.Variable.Map, ::Int64, ::MathOptInterface.Bridges.var"#80#81"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.GreaterThan{Float64}, DataType}), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.Variable.Map, Int64, MathOptInterface.Bridges.var"#80#81"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.GreaterThan{Float64}, DataType}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for (::MathOptInterface.Bridges.var"#80#81"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.GreaterThan{Float64}, DataType})(), 0x00000000000072ed, Any[], Any[])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for bridge_constrained_variable(::Type{MathOptInterface.Bridges.Variable.VectorizeBridge{Float64, S}}, ::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.GreaterThan{Float64}) where S, 0x00000000000072ed, Any[Core.Const(Float64), Any], Any[Type{MathOptInterface.Bridges.Variable.VectorizeBridge{Float64, S}} where S, MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.GreaterThan{Float64}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_constrained_variables(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::AbstractVector{var"#s32"} where var"#s32"<:MathOptInterface.AbstractScalarSet), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, AbstractVector{var"#s32"} where var"#s32"<:MathOptInterface.AbstractScalarSet, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_constrained_variable(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.AbstractScalarSet), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.AbstractScalarSet, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_variable(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_constrained_variables(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Reals), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_keys_for_bridge(::MathOptInterface.Bridges.Variable.Map, ::MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType}, ::MathOptInterface.Reals), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.Variable.Map, MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType}, MathOptInterface.Reals, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for call_in_context(::MathOptInterface.Bridges.Variable.Map, ::Int64, ::MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType}), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.Variable.Map, Int64, MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for (::MathOptInterface.Bridges.var"#78#79"{MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, DataType})(), 0x00000000000072ed, Any[], Any[])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for bridge_constrained_variable(::Type{MathOptInterface.Bridges.Variable.FreeBridge{T}}, ::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Reals) where T, 0x00000000000072ed, Any[Any], Any[Type{MathOptInterface.Bridges.Variable.FreeBridge{T}} where T, MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Reals, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_constrained_variables(::MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, ::MathOptInterface.Nonnegatives), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.LazyBridgeOptimizer{MathOptInterface.Utilities.CachingOptimizer{Clp.Optimizer, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}}, MathOptInterface.Nonnegatives, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for add_keys_for_bridge(::MathOptInterface.Bridges.Variable.Map, ::MathOptInterface.Bridges.var"#78#79", ::MathOptInterface.Nonnegatives), 0x00000000000072ed, Any[], Any[MathOptInterface.Bridges.Variable.Map, MathOptInterface.Bridges.var"#78#79", MathOptInterface.Nonnegatives, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for unbridged_map(::MathOptInterface.Bridges.Variable.SOCtoRSOCBridge{T}, ::Vector{MathOptInterface.VariableIndex}) where T, 0x00000000000072ed, Any[Any], Any[MathOptInterface.Bridges.Variable.SOCtoRSOCBridge, Vector{MathOptInterface.VariableIndex}])
 Core.Compiler.Timings.InferenceFrameInfo(MethodInstance for rotate_unbridged_map(::Type, ::Vector{MathOptInterface.VariableIndex}, ::Vector{MathOptInterface.VariableIndex}), 0x00000000000072ed, Any[], Any[Type, Vector{MathOptInterface.VariableIndex}, Vector{MathOptInterface.VariableIndex}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}, Union{}])
julia>

(It's probably not relevant, but the chunk containing the last 9 lines are repeated once earlier, so there's some recursion going on here as well.)

i think this is more or less just showing the same thing @Sacha0 reduced it to, now that i'm looking at it!

@Sacha0
Copy link
Member

Sacha0 commented Oct 24, 2020

Further reduction

using JuMP
using Clp
using MathOptInterface

model = backend(Model(Clp.Optimizer))

function fluff(dest::MOI.ModelLike, src::MOI.ModelLike, cis_src)
    cis_src = MOI.get(model.model_cache, MOI.ListOfConstraintIndices{MOI.VectorOfVariables, MathOptInterface.AbstractVectorSet}())
    set = MOI.get(src, MOI.ConstraintSet(), first(cis_src))
    MOI.add_constrained_variables(dest, set)
end

fluff(model.optimizer, model.model_cache, cis_src)

@Sacha0
Copy link
Member

Sacha0 commented Oct 24, 2020

Or taking off from Nathan's snoopi_deep trace, we can more directly trigger what I would hope is the same stack overflow

using MathOptInterface

atypes = Tuple{Type, Vector{MathOptInterface.VariableIndex}, Vector{MathOptInterface.VariableIndex}}
meth = first(methods(MathOptInterface.Bridges.Variable.rotate_unbridged_map, atypes))

optimize = true
sparams = Core.svec()
types = Tuple{typeof(MathOptInterface.Bridges.Variable.rotate_unbridged_map), atypes.parameters...}
interpreter = Core.Compiler.NativeInterpreter(typemax(UInt))
Core.Compiler.typeinf_code(interpreter, meth, types, sparams, optimize)

yielding

ERROR: StackOverflowError:
Stacktrace:
  [1] _methods_by_ftype
    @ ./reflection.jl:821 [inlined]
  [2] #findall#208
    @ ./compiler/methodtable.jl:57 [inlined]
  [3] (::Core.Compiler.var"#210#211"{Int64, Core.Compiler.CachedMethodTable{Core.Compiler.InternalMethodTable}, Core.Box})()
    @ Core.Compiler ./compiler/methodtable.jl:67
  [4] get!
    @ ./iddict.jl:163 [inlined]
  [5] #findall#209
    @ ./compiler/methodtable.jl:66 [inlined]
  [6] abstract_call_gf_by_type(interp::Core.Compiler.NativeInterpreter, f::Any, argtypes::Vector{Any}, atype::Any, sv::Core.Compiler.InferenceState, max_methods::Int64)
    @ Core.Compiler ./compiler/abstractinterpretation.jl:71
  [7] abstract_call_known(interp::Core.Compiler.NativeInterpreter, f::Any, fargs::Vector{Any}, argtypes::Vector{Any}, sv::Core.Compiler.InferenceState, max_methods::Int64)
    @ Core.Compiler ./compiler/abstractinterpretation.jl:1003
  [8] abstract_call(interp::Core.Compiler.NativeInterpreter, fargs::Vector{Any}, argtypes::Vector{Any}, sv::Core.Compiler.InferenceState, max_methods::Int64)
    @ Core.Compiler ./compiler/abstractinterpretation.jl:1026
  [9] abstract_call(interp::Core.Compiler.NativeInterpreter, fargs::Vector{Any}, argtypes::Vector{Any}, sv::Core.Compiler.InferenceState)
    @ Core.Compiler ./compiler/abstractinterpretation.jl:1010
 [10] abstract_eval_statement(interp::Core.Compiler.NativeInterpreter, e::Any, vtypes::Vector{Any}, sv::Core.Compiler.InferenceState)
    @ Core.Compiler ./compiler/abstractinterpretation.jl:1132
 [11] typeinf_local(interp::Core.Compiler.NativeInterpreter, frame::Core.Compiler.InferenceState)
    @ Core.Compiler ./compiler/abstractinterpretation.jl:1386
 [12] typeinf_nocycle(interp::Core.Compiler.NativeInterpreter, frame::Core.Compiler.InferenceState)
    @ Core.Compiler ./compiler/abstractinterpretation.jl:1442
 [13] _typeinf(interp::Core.Compiler.NativeInterpreter, frame::Core.Compiler.InferenceState)
    @ Core.Compiler ./compiler/typeinfer.jl:205
 [14] typeinf(interp::Core.Compiler.NativeInterpreter, frame::Core.Compiler.InferenceState)
    @ Core.Compiler ./compiler/typeinfer.jl:200
 [15] typeinf_code(interp::Core.Compiler.NativeInterpreter, method::Method, atypes::Any, sparams::Core.SimpleVector, run_optimizer::Bool)
    @ Core.Compiler ./compiler/typeinfer.jl:761
 [16] top-level scope
    @ REPL[8]:1

@Sacha0
Copy link
Member

Sacha0 commented Oct 24, 2020

Reduces to

using MathOptInterface

atypes = Tuple{typeof(+), Type, MathOptInterface.ScalarAffineFunction, MathOptInterface.ScalarAffineFunction}
sigtype = Tuple{typeof(MathOptInterface.Utilities.operate), atypes.parameters...}
first(Core.Compiler._methods_by_ftype(sigtype, -1, typemax(UInt)))

where _methods_by_ftype immediately ccalls jl_matching_methods.

@chriscoey chriscoey mentioned this issue Oct 24, 2020
Closed
@mlubin
Copy link
Member

mlubin commented Oct 25, 2020

Given how this affects JuMP, I'm requesting to make sure this is fixed for the 1.6 release.

@KristofferC KristofferC added the regression Regression in behavior compared to a previous version label Oct 25, 2020
@KristofferC KristofferC added this to the 1.6 features milestone Oct 25, 2020
@JeffBezanson JeffBezanson self-assigned this Oct 26, 2020
@Sacha0
Copy link
Member

Sacha0 commented Oct 27, 2020

A little more information. This call to jl_type_intersection2 appears to result in the stack overflow:

(lldb) c
Process 7713 resuming
Process 7713 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 6.1
    frame #0: 0x000000010217b2c6 libjulia-debug.1.6.dylib`jl_type_intersection2(t1=0x00000001257157f0, t2=0x0000000125715bf0, isect=0x00007ffeefbfc7f0, isect2=0x00007ffeefbfc7a8) at gf.c:1555:6
   1552
   1553	static int jl_type_intersection2(jl_value_t *t1, jl_value_t *t2, jl_value_t **isect, jl_value_t **isect2)
   1554	{
-> 1555	    *isect2 = NULL;
   1556	    *isect = jl_type_intersection(t1, t2);
   1557	    if (*isect == jl_bottom_type)
   1558	        return 0;
Target 0: (julia-debug) stopped.
(lldb) p jl_(t1)
Tuple{typeof(MathOptInterface.Utilities.operate), typeof(Base.:(+)), Type{T}, T, MathOptInterface.ScalarAffineFunction{T}} where T<:(MathOptInterface.ScalarAffineFunction{T} where T)
(lldb) p jl_(t2)
Tuple{typeof(MathOptInterface.Utilities.operate), typeof(Base.:(+)), Union{Type{T}, Type{T}}, Union{MathOptInterface.ScalarAffineFunction{T}, MathOptInterface.ScalarAffineFunction{T}}, Union{MathOptInterface.ScalarAffineFunction{T}, T}} where T<:(MathOptInterface.ScalarAffineFunction{T} where T) where T

@NHDaly NHDaly mentioned this issue Oct 27, 2020
Open
@JeffBezanson
Copy link
Member

Reduced:

typeintersect(Tuple{Type{T}, T, Ref{T}} where T<:Ref,
              Tuple{Type{S}, Union{Ref{S}, Ref{T}}, T} where T<:Ref where S)

@martinholters martinholters added the types and dispatch Types, subtyping and method dispatch label Oct 29, 2020
@Keno
Copy link
Member

Keno commented Oct 29, 2020

@JeffBezanson do you have a handle on this? Is this branch blocking or just release blocking?

@JeffBezanson
Copy link
Member

I would say just release blocking.

JeffBezanson added a commit that referenced this issue Oct 30, 2020
@JeffBezanson
fix #22787, another bounds circularity in type intersection
86609ec
JeffBezanson added a commit that referenced this issue Oct 30, 2020
@JeffBezanson
fix #22787, another bounds circularity in type intersection
2ff075e
@Sacha0 Sacha0 closed this as completed in addb20c Nov 3, 2020
Sacha0 added a commit that referenced this issue Nov 3, 2020
@Sacha0
Merge pull request #38245 from JuliaLang/jb/fix22787
ce1cf9f 
fix #22787, another bounds circularity in type intersection
JeffBezanson added a commit that referenced this issue Nov 3, 2020
@JeffBezanson
fix #22787, another bounds circularity in type intersection
4121fcc 
also fix #38279
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@JeffBezanson JeffBezanson

Labels
compiler:inference Type inference regression Regression in behavior compared to a previous version types and dispatch Types, subtyping and method dispatch
Projects
None yet
Milestone
1.6.0
Development

No branches or pull requests
10 participants
@vtjnash @JeffBezanson @KristofferC @Keno @NHDaly @mlubin @quinnj @Sacha0 @chriscoey @martinholters