From d7fe2fdd93e6a2b0f9be4ee210131ab5476a687f Mon Sep 17 00:00:00 2001
From: Aayush Sabharwal <aayush.sabharwal@juliahub.com>
Date: Sat, 14 Feb 2026 11:22:39 +0530
Subject: [PATCH] fix: handle `Const` arguments of clock operators

---
 lib/ModelingToolkitTearing/src/tearingstate.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/ModelingToolkitTearing/src/tearingstate.jl b/lib/ModelingToolkitTearing/src/tearingstate.jl
index e1bd180..198f533 100644
--- a/lib/ModelingToolkitTearing/src/tearingstate.jl
+++ b/lib/ModelingToolkitTearing/src/tearingstate.jl
@@ -210,6 +210,7 @@ function TearingState(sys::System, source_info::Union{Nothing, MTKBase.EquationS
                             it = input_timedomain(v)::Vector{InputTimeDomainElT}
                             for (i, td) in enumerate(it)
                                 v′ = args[i]
+                                SU.isconst(v′) && continue
                                 addvar!(setmetadata(v′, MTKBase.VariableTimeDomain, td), VARIABLE)
                             end
                     end