# Problem with MathOptInterface.jl @ 1.7.0

**URL:** <https://discourse.julialang.org/t/problem-with-mathoptinterface-jl-1-7-0/86450>\
**Category:** Optimization (Mathematical)\
**Created:** [August 28, 2022, 1:16am UTC](https://discourse.julialang.org/t/problem-with-mathoptinterface-jl-1-7-0/86450 "2022-08-28T01:16:17Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![lionisxn](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/lionisxn/32/37989_2.png) [@lionisxn](https://discourse.julialang.org/u/lionisxn)\
**Post date:** [August 28, 2022, 1:16am UTC](https://discourse.julialang.org/t/problem-with-mathoptinterface-jl-1-7-0/86450/1 "2022-08-28T01:16:17Z")

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Does anyone encounter a crash on Julia 1.8.0 when using the latest version JuMP.jl and MathOptInterface.jl @ 1.7.0? The following pop-up messages are displayed on my computer running windows 11. However, when switched to MathOptInterface.jl @ 1.6.1, everything goes well.

> Blockquote  
> Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.  
> Exception: EXCEPTION\_ACCESS\_VIOLATION at 0x6542ded8 – jl\_f\_getfield at /cygdrive/c/buildbot/worker/package\_win64/build/src\builtins.c:923  
> Blockquote

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**Author:** ![nsajko](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nsajko/32/221187_2.png) [@nsajko](https://discourse.julialang.org/u/nsajko)\
**Post date:** [August 28, 2022, 2:19am UTC](https://discourse.julialang.org/t/problem-with-mathoptinterface-jl-1-7-0/86450/2 "2022-08-28T02:19:33Z")

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Give more information (complete stacktrace, …) and a reproducer, if possible.

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**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [August 28, 2022, 4:42am UTC](https://discourse.julialang.org/t/problem-with-mathoptinterface-jl-1-7-0/86450/3 "2022-08-28T04:42:09Z")

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Can you share a reproducible example? What code were you running when it happened?

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<div class="post-metadata">

**Author:** ![lionisxn](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/lionisxn/32/37989_2.png) [@lionisxn](https://discourse.julialang.org/u/lionisxn)\
**Post date:** [August 28, 2022, 5:50am UTC](https://discourse.julialang.org/t/problem-with-mathoptinterface-jl-1-7-0/86450/4 "2022-08-28T05:50:34Z")

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> [@odow](#):
>
> producible example? What code were yo

For instance, a piece of simple code like this:  
import JuMP, GLPK  
m = JuMP.Model(JuMP.optimizer\_with\_attributes(GLPK.Optimizer, “msg\_lev” =\> GLPK.GLP\_MSG\_OFF))  
JuMP.@variable(m, x)  
JuMP.@constraint(m, x ≥ 0)  
JuMP.@objective(m, Min, x)  
JuMP.optimize!(m)

crash information:  
Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.  
Exception: EXCEPTION\_ACCESS\_VIOLATION at 0x6542ded8 – jl\_f\_getfield at /cygdrive/c/buildbot/worker/package\_win64/build/src\builtins.c:923  
jl\_f\_getfield at /cygdrive/c/buildbot/worker/package\_win64/build/src\builtins.c:923  
pass\_attributes at D:\Program Files\Julia.julia\packages\MathOptInterface\LqT2k\src\Utilities\copy.jl:66  
default\_copy\_to at D:\Program Files\Julia.julia\packages\MathOptInterface\LqT2k\src\Utilities\copy.jl:494  
copy\_to at D:\Program Files\Julia.julia\packages\MathOptInterface\LqT2k\src\Bridges\bridge\_optimizer.jl:451 [inlined]  
optimize! at D:\Program Files\Julia.julia\packages\MathOptInterface\LqT2k\src\MathOptInterface.jl:86 [inlined]  
optimize! at D:\Program Files\Julia.julia\packages\MathOptInterface\LqT2k\src\Utilities\cachingoptimizer.jl:316  
unknown function (ip: 0000000000f22ae6)#optimize!#138 at D:\Program Files\Julia.julia\packages\JuMP\60Bnj\src\optimizer\_interface.jl:185  
optimize! at D:\Program Files\Julia.julia\packages\JuMP\60Bnj\src\optimizer\_interface.jl:155  
unknown function (ip: 0000000000f13706)jl\_apply at /cygdrive/c/buildbot/worker/package\_win64/build/src\julia.h:1838 [inlined]  
do\_call at /cygdrive/c/buildbot/worker/package\_win64/build/src\interpreter.c:126  
eval\_value at /cygdrive/c/buildbot/worker/package\_win64/build/src\interpreter.c:215  
eval\_stmt\_value at /cygdrive/c/buildbot/worker/package\_win64/build/src\interpreter.c:166 [inlined]  
eval\_body at /cygdrive/c/buildbot/worker/package\_win64/build/src\interpreter.c:594  
jl\_interpret\_toplevel\_thunk at /cygdrive/c/buildbot/worker/package\_win64/build/src\interpreter.c:750  
jl\_toplevel\_eval\_flex at /cygdrive/c/buildbot/worker/package\_win64/build/src\toplevel.c:906  
jl\_toplevel\_eval\_flex at /cygdrive/c/buildbot/worker/package\_win64/build/src\toplevel.c:850  
ijl\_toplevel\_eval at /cygdrive/c/buildbot/worker/package\_win64/build/src\toplevel.c:915 [inlined]  
ijl\_toplevel\_eval\_in at /cygdrive/c/buildbot/worker/package\_win64/build/src\toplevel.c:965  
eval at .\boot.jl:368 [inlined]  
include\_string at .\loading.jl:1428  
include\_string at D:\Program Files\Julia.julia\packages\Atom\BEJkS\src\utils.jl:286 [inlined]  
#218 at D:\Program Files\Julia.julia\packages\Atom\BEJkS\src\eval.jl:121  
withpath at D:\Program Files\Julia.julia\packages\CodeTools\VsjEq\src\utils.jl:30  
unknown function (ip: 00000000010acc54)withpath at D:\Program Files\Julia.julia\packages\Atom\BEJkS\src\eval.jl:9  
#217 at D:\Program Files\Julia.julia\packages\Atom\BEJkS\src\eval.jl:119  
unknown function (ip: 00000000010abed3)with\_logstate at .\logging.jl:511  
with\_logger at .\logging.jl:623 [inlined]  
#216 at D:\Program Files\Julia.julia\packages\Atom\BEJkS\src\eval.jl:118 [inlined]  
hideprompt at D:\Program Files\Julia.julia\packages\Atom\BEJkS\src\repl.jl:127

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<div class="post-metadata">

**Author:** ![jd-foster](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jd-foster/32/35824_2.png) [@jd-foster](https://discourse.julialang.org/u/jd-foster)\
**Post date:** [August 28, 2022, 9:39am UTC](https://discourse.julialang.org/t/problem-with-mathoptinterface-jl-1-7-0/86450/5 "2022-08-28T09:39:39Z")

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What happens when you run this?:

```julia
import JuMP, GLPK
m = JuMP.Model(GLPK.Optimizer)
JuMP.@variable(m, x)
JuMP.@constraint(m, x ≥ 0)
JuMP.MOI.get(m, JuMP.MOI.ListOfVariableAttributesSet())

```

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<div class="post-metadata">

**Author:** ![lionisxn](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/lionisxn/32/37989_2.png) [@lionisxn](https://discourse.julialang.org/u/lionisxn)\
**Post date:** [August 28, 2022, 11:29am UTC](https://discourse.julialang.org/t/problem-with-mathoptinterface-jl-1-7-0/86450/6 "2022-08-28T11:29:04Z")

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I just removed the package by “Pkg.rm(“MathOptInterface”)”, and reinstalled it. Now, everything is fine! Many thanks for your attention!