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Fix diable_sigint for XPRSiisfirst #333

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Merged
odow merged 1 commit into from
Jul 28, 2026
Merged

Fix diable_sigint for XPRSiisfirst #333

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5 changes: 4 additions & 1 deletion src/MOI/MOI_wrapper.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -4303,7 +4303,10 @@ end

function _getfirstiis(model::Optimizer)
status_code = Ref{Cint}(0)
ret = XPRSiisfirst(model, 1, status_code)
ret = disable_sigint() do
return XPRSiisfirst(model, 1, status_code)
end
_check_cb_exception(model)
_check(model, ret)
if status_code[] == 1 # The problem is actually feasible.
return IISData(status_code[], 0, 0, Cint[], Cint[], UInt8[], UInt8[])
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20 changes: 20 additions & 0 deletions test/test_MOI_wrapper.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -2347,6 +2347,26 @@ function test_NLPLOG()
return
end

function test_issue_332()
model = Xpress.Optimizer()
MOI.set(model, MOI.Silent(), true)
MOI.set(model, MOI.RawOptimizerAttribute("PRESOLVE"), 0)
MOI.set(model, MOI.RawOptimizerAttribute("MIPPRESOLVE"), 0)
MOI.set(model, MOI.RawOptimizerAttribute("HEURSTRATEGY"), 0)
MOI.set(model, MOI.RawOptimizerAttribute("CUTSTRATEGY"), 0)
n = 10
x = MOI.add_variables(model, n)
MOI.add_constraint.(model, x, MOI.ZeroOne())
f = sum(2.0 * i * x[i] for i in 1:n)
c = MOI.add_constraint(model, f, MOI.EqualTo(2.0 * sum(1:n) - 1.0))
MOI.optimize!(model)
@test MOI.get(model, MOI.TerminationStatus()) == MOI.INFEASIBLE
MOI.compute_conflict!(model)
@test MOI.get(model, MOI.ConflictStatus()) == MOI.CONFLICT_FOUND
@test MOI.get(model, MOI.ConstraintConflictStatus(), c) == MOI.IN_CONFLICT
return
end

end # TestMOIWrapper

TestMOIWrapper.runtests()
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