fix #10186, a[a] = x

JuliaLang · Feb 13, 2015 · f8973cb · f8973cb · StefanKarpinski · Feb 14, 2015
1 parent 478dcb4
commit f8973cb
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diff --git a/base/array.jl b/base/array.jl
@@ -381,6 +381,9 @@ function setindex!{T<:Real}(A::Array, X::AbstractArray, I::AbstractVector{T})
  count = 1
  if is(X,A)
  X = copy(X)
+ is(I,A) && (I = X)
+ elseif is(I,A)
+ I = copy(I)
  end
  for i in I
  A[i] = X[count]

diff --git a/test/arrayops.jl b/test/arrayops.jl
@@ -677,6 +677,9 @@ a = [1,3,5]
 b = [3,1,2]
 a[b] = a
 @test a == [3,5,1]
+a = [3,2,1]
+a[a] = [4,5,6]
+@test a == [6,5,4]
 
 # lexicographic comparison
 @test lexcmp([1.0], [1]) == 0