don't rewrap a forwarddiff tag

JuliaDiff · Nov 1, 2023 · 41033f4 · 41033f4
1 parent d6fae4e
commit 41033f4
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/highlevel/forward_mode.jl b/src/highlevel/forward_mode.jl
@@ -16,6 +16,7 @@ function ForwardDiff.checktag(::Type{<:ForwardDiff.Tag{<:SparseDiffToolsTag, <:T
 end
 
 __standard_tag(::Nothing, x) = ForwardDiff.Tag(SparseDiffToolsTag(), eltype(x))
+__standard_tag(tag::ForwardDiff.Tag, _) = tag
 __standard_tag(tag, x) = ForwardDiff.Tag(tag, eltype(x))
 
 function sparse_jacobian_cache(ad::Union{AutoSparseForwardDiff, AutoForwardDiff},