Update solve.jl

SciML · Nov 2, 2023 · 3a76bb0 · 3a76bb0
1 parent 4cc617d
commit 3a76bb0
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/solve.jl b/src/solve.jl
@@ -97,8 +97,9 @@ function DiffEqBase.__init(prob::Union{DiffEqBase.AbstractODEProblem,
     end
 
     if alg isa OrdinaryDiffEqRosenbrockAdaptiveAlgorithm &&
-            !(prob.f.mass_matrix isa SciMLOperators.AbstractSciMLOperator) &&
+            prob.f.mass_matrix isa AbstractMatrix &&
             all(isequal(0), prob.f.mass_matrix)
+        # technically this should also warn for zero operators but those are hard to check for
         alg isa Union{Rosenbrock23, Rosenbrock32} && error("Rosenbrock23 and Rosenbrock32 require at least one differential variable to produce valid solutions")
         if dense && verbose
             @warn("Rosenbrock methods have questionable interpolations when applied to equations without differential states.")