From bd18d2058c4a55732ca79636de5addbb1ced3ebc Mon Sep 17 00:00:00 2001
From: Jishnu Bhattacharya <jishnub.github@gmail.com>
Date: Mon, 23 Dec 2024 17:14:16 +0530
Subject: [PATCH] Specify `init` in `maximum` in `subblockbandwidths`

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

diff --git a/src/BandedBlockBandedMatrix.jl b/src/BandedBlockBandedMatrix.jl
index 770efd1..33b7eda 100644
--- a/src/BandedBlockBandedMatrix.jl
+++ b/src/BandedBlockBandedMatrix.jl
@@ -288,7 +288,7 @@ subblockbandwidths(A::BandedBlockBandedMatrix) = (A.λ, A.μ)
 # default is to use whole block
 _subblockbandwidths(A::AbstractMatrix, ::NTuple{2,OneTo{Int}}) = bandwidths(A)
 function _subblockbandwidths(A::AbstractMatrix, _)
-    M,N = map(maximum, blocklengths.(axes(A)))
+    M,N = map(x -> maximum(x, init=0), blocklengths.(axes(A)))
     M-1,N-1
 end