Wrong result with Int16 and offset index in for loop

[zsoerenm]

Here is a MWE:

function test_for_with_different_index!(a, b, c, start_sample, num_samples)
    @inbounds for i = start_sample:num_samples + start_sample - 1
        c[i] = b[i] * a[i]
    end
end

function test_for_with_different_index_avx!(a, b, c, start_sample, num_samples)
    @avx for i = start_sample:num_samples + start_sample - 1
        c[i] = b[i] * a[i]
    end
end

a = rand(Int16, 1000)
b = rand(Int16, 1000)
c = similar(a_re)
c_avx = similar(a_re)
test_for_with_different_index!(a, b, c, 30, 800)
test_for_with_different_index_avx!(a, b, c_avx, 30, 800)
@test c[30:829] == c_avx[30:829]

Test Failed at /home/zorn/Documents/Code/Testing/test_avx.jl:44
  Expression: c[30:829] == c_avx[30:829]
   Evaluated: Int16[-17628, -17250, -31956, 29328, 2240, 8696, -8285, 1924, 16032, 9148  …  25940, -4788, 23094, 18864, -21520, 6014, -7572, -18266, -15094, 28000] == Int16[-17628, -17250, -31956, 29328, 2240, 8696, -8285, 1924, 16032, 9148  …  25940, -4788, 23094, 18864, -21520, 6014, -7572, 32544, 0, 16048]

Only the last three entries are wrong.

With floats the result is correct, though.