Add the scaled identity matrix to a random matrix to avoid getting a …

…singular matrix (#30576) Fix #30572 (cherry picked from commit 4d8a968)
JuliaLang · Apr 20, 2019 · 2dc20f7 · 2dc20f7
1 parent 7786f78
commit 2dc20f7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/stdlib/SuiteSparse/test/umfpack.jl b/stdlib/SuiteSparse/test/umfpack.jl
@@ -178,7 +178,7 @@ using LinearAlgebra: Adjoint, Transpose, SingularException
     end
 
     @testset "deserialization" begin
-        A  = sprandn(10, 10, 0.4)
+        A  = 10*I + sprandn(10, 10, 0.4)
         F1 = lu(A)
         b  = IOBuffer()
         serialize(b, F1)