There is a bug in the calculation conditions for sparse matrices

[frobers]

using LinearAlgebra,SparseArrays
A = sparse([1.0 2.0;3.0 4.0])
SparseArrays.cond(A,1)

Has anyone noticed this issue? The code above seems to consistently fail to exit. cond(collect(A),1) works fine.

[araujoms]

It seems that any real 2x2 matrix gets stuck in an infinite loop here:

SparseArrays.jl/src/linalg.jl

Lines 1734 to 1758 in 2b32b60

	if T <: Real
	# Check whether cols of S are parallel to cols of S or S_old
	for j = 1:t
	while true
	repeated = false
	if j > 1
	saux = S[1:n,j]' * S[1:n,1:j-1]
	if _any_abs_eq(saux,n)
	repeated = true
	end
	end
	if !repeated
	saux2 = S[1:n,j]' * S_old[1:n,1:t]
	if _any_abs_eq(saux2,n)
	repeated = true
	end
	end
	if repeated
	rand!(view(S,1:n,j), (-1, 1))
	else
	break
	end
	end
	end
	end