From 36931f1ca3616a43992c12b8fb3fb99ff7514d08 Mon Sep 17 00:00:00 2001
From: Jishnu Bhattacharya <jishnub.github@gmail.com>
Date: Tue, 11 Jul 2023 20:12:05 +0530
Subject: [PATCH] Narrow structured type argument in diag

---
 src/FillArrays.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/FillArrays.jl b/src/FillArrays.jl
index 21f6fbd8..72bfb952 100644
--- a/src/FillArrays.jl
+++ b/src/FillArrays.jl
@@ -519,7 +519,7 @@ end
 #################
 
 for SMT in (:Diagonal, :Bidiagonal, :Tridiagonal, :SymTridiagonal)
-    @eval function diag(D::$SMT{<:Number,<:AbstractFillVector}, k::Integer=0)
+    @eval function diag(D::$SMT{T,<:AbstractFillVector{T}}, k::Integer=0) where {T<:Number}
         inds = (1,1) .+ (k >= 0 ? (0,k) : (-k,0))
         v = get(D, inds, zero(eltype(D)))
         Fill(v, length(diagind(D, k)))