From 78035e1a4475b77f54964b3f9dd7ca6b92ac7f51 Mon Sep 17 00:00:00 2001
From: William Moses <gh@wsmoses.com>
Date: Sun, 1 Dec 2024 12:49:10 -0500
Subject: [PATCH] Match base julia error messages for hvcat (#588)

---
 src/sparsevector.jl | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/sparsevector.jl b/src/sparsevector.jl
index 751ffe6a..24cae01f 100644
--- a/src/sparsevector.jl
+++ b/src/sparsevector.jl
@@ -1243,6 +1243,15 @@ function hvcat_internal(rows::Tuple{Vararg{Int}}, X1::_SparseConcatGroup, X::_Sp
     if anysparse(X1) || anysparse(X...)
         vcat(_hvcat_rows(rows, X1, X...)...)
     else
+        # Needed to match error type with Base Julia. See https://github.com/JuliaLang/julia/pull/56543#issuecomment-2508637550
+        matrix_len = if length(rows) == 0
+            0
+        else
+            length(rows) * rows[1]
+        end
+        if matrix_len != 1 + length(X)
+            throw(ArgumentError("argument count does not match specified shape (expected $matrix_len, got $(1+length(X)))"))
+        end
         Base.typed_hvcat(Base.promote_eltypeof(X1, X...), rows, X1, X...)
     end
 end