From 5b6ce3e6f6dd12642098d13764573893c12a86c3 Mon Sep 17 00:00:00 2001
From: Sheehan Olver <solver@mac.com>
Date: Wed, 1 Jul 2026 09:25:58 +0100
Subject: [PATCH] Fix Stack overflow in OneTo(n)[[Block(1)]]

---
 Project.toml              | 2 +-
 src/blockaxis.jl          | 2 ++
 test/test_blockindices.jl | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Project.toml b/Project.toml
index fbe8ecd3..dddf335b 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "BlockArrays"
 uuid = "8e7c35d0-a365-5155-bbbb-fb81a777f24e"
-version = "1.9.4"
+version = "1.9.5"
 
 
 [deps]
diff --git a/src/blockaxis.jl b/src/blockaxis.jl
index 57d6f014..94c4d601 100644
--- a/src/blockaxis.jl
+++ b/src/blockaxis.jl
@@ -590,6 +590,8 @@ end
     b
 end
 
+getindex(b::AbstractUnitRange{<:Integer}, K::AbstractVector{<:Block{1}}) = [b[k] for k in K]
+
 blockaxes(b::AbstractUnitRange{T}) where {T<:Integer} = (Block.(Base.OneTo(one(T))),)
 
 function findblock(b::AbstractUnitRange{<:Integer}, k::Integer)
diff --git a/test/test_blockindices.jl b/test/test_blockindices.jl
index 30d366f2..9cfcc32e 100644
--- a/test/test_blockindices.jl
+++ b/test/test_blockindices.jl
@@ -137,6 +137,8 @@ import BlockArrays: split_index, merge_indices
         @test Int.(b) === 2:5
         @test Base.OneTo.(1:5) isa Vector{Base.OneTo{Int}} #98
         @test Base.OneTo(5)[Block.(1:1)] === Base.OneTo(5)
+        @test Base.OneTo(1)[[Block(1)]] == [Base.OneTo(1)]
+        @test Base.OneTo(1)[[Block(1),Block(1)]] == [Base.OneTo(1),Base.OneTo(1)]
         @test_throws BlockBoundsError Base.OneTo(5)[Block.(1:3)]
 
         @test intersect(Block.(2:5), Block.(3:6)) ≡ Block.(3:5)