From 825c8ade60aba3de40a6751e4a7693c890e27820 Mon Sep 17 00:00:00 2001
From: odow <o.dowson@gmail.com>
Date: Wed, 25 Jan 2023 10:20:17 +1300
Subject: [PATCH] Fix bug when setting a quadratic objective

---
 Project.toml        |  2 +-
 src/MOI_wrapper.jl  |  1 +
 test/MOI_wrapper.jl | 14 ++++++++++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/Project.toml b/Project.toml
index 028d93b..05011b3 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "HiGHS"
 uuid = "87dc4568-4c63-4d18-b0c0-bb2238e4078b"
-version = "1.4.1"
+version = "1.4.2"
 
 [deps]
 HiGHS_jll = "8fd58aa0-07eb-5a78-9b36-339c94fd15ea"
diff --git a/src/MOI_wrapper.jl b/src/MOI_wrapper.jl
index b5a6c32..912689a 100644
--- a/src/MOI_wrapper.jl
+++ b/src/MOI_wrapper.jl
@@ -928,6 +928,7 @@ function MOI.set(
     )
     _check_ret(ret)
     model.hessian = Q
+    model.is_objective_function_set = true
     return
 end
 
diff --git a/test/MOI_wrapper.jl b/test/MOI_wrapper.jl
index b28dedf..976fc97 100644
--- a/test/MOI_wrapper.jl
+++ b/test/MOI_wrapper.jl
@@ -390,6 +390,20 @@ function test_option_type()
     end
 end
 
+function test_quadratic_sets_objective()
+    model = HiGHS.Optimizer()
+    MOI.Utilities.loadfromstring!(
+        model,
+        """
+        variables: x
+        minobjective: 1.0 * x * x
+        """,
+    )
+    attr = MOI.ObjectiveFunction{MOI.ScalarQuadraticFunction{Float64}}()
+    @test attr in MOI.get(model, MOI.ListOfModelAttributesSet())
+    return
+end
+
 end
 
 TestMOIHighs.runtests()