From d04ece1800d286f292f74eca35988414537809e1 Mon Sep 17 00:00:00 2001
From: Kipton Barros <kbarros@gmail.com>
Date: Mon, 6 Jan 2025 16:53:57 -0700
Subject: [PATCH] Reference Lanczos doesn't overwrite v

---
 src/KPM/Lanczos.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/KPM/Lanczos.jl b/src/KPM/Lanczos.jl
index 58412dc35..b7f3130ff 100644
--- a/src/KPM/Lanczos.jl
+++ b/src/KPM/Lanczos.jl
@@ -93,6 +93,7 @@ function lanczos(mulA!, mulS!, v; min_iters, resolution=Inf, lhs=zeros(length(v)
     βs = Float64[]
     lhs_adj_Q = Vector{ComplexF64}[]
 
+    v = copy(v)
     vp  = zero(v)
     Sv  = zero(v)
     Svp = zero(v)