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TPin array before taking pointers #99

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Merged
udesou merged 1 commit into from
Sep 15, 2025
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TPin array before taking pointers #99

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2 changes: 2 additions & 0 deletions stdlib/Random/test/runtests.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -251,6 +251,7 @@ let mt = MersenneTwister(0)
resize!(a, 1000) # could be 8-byte aligned
b = Vector{Float64}(undef, 1000) # should be 16-byte aligned
c8 = Vector{UInt64}(undef, 1001)
Base.increment_tpin_count!(c8)
pc8 = pointer(c8)
if Int(pc8) % 16 == 0
# Make sure pc8 is not 16-byte aligned since that's what we want to test.
Expand Down Expand Up @@ -476,6 +477,7 @@ end
@testset "rand(Bool) uniform distribution" begin
for n in [rand(1:8), rand(9:16), rand(17:64)]
a = zeros(Bool, n)
Base.increment_tpin_count!(a)
a8 = unsafe_wrap(Array, Ptr{UInt8}(pointer(a)), length(a); own=false) # unsafely observe the actual bit patterns in `a`
as = zeros(Int, n)
# we will test statistical properties for each position of a,
Expand Down