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-rw-r--r--lib/matrix.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/matrix.rb b/lib/matrix.rb
index f82ed65979..e0995c394f 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -204,6 +204,7 @@ class Matrix
#
def Matrix.diagonal(*values)
size = values.size
+ return Matrix.empty if size == 0
rows = Array.new(size) {|j|
row = Array.new(size, 0)
row[j] = values[j]