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Merged
merged 1 commit into from
Feb 26, 2025
Merged

Check that malformed allocations throw and don't stackoverflow #576

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8 changes: 4 additions & 4 deletions src/KernelAbstractions.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -533,15 +533,15 @@ Allocate a storage array appropriate for the computational backend.
!!! note
Backend implementations **must** implement `allocate(::NewBackend, T, dims::Tuple)`
"""
allocate(backend::Backend, T, dims...) = allocate(backend, T, dims)
allocate(backend::Backend, T, dims::Tuple) = throw(MethodError(allocate, (backend, T, dims)))
allocate(backend::Backend, T::Type, dims...) = allocate(backend, T, dims)
allocate(backend::Backend, T::Type, dims::Tuple) = throw(MethodError(allocate, (backend, T, dims)))

"""
zeros(::Backend, Type, dims...)::AbstractArray

Allocate a storage array appropriate for the computational backend filled with zeros.
"""
zeros(backend::Backend, T, dims...) = zeros(backend, T, dims)
zeros(backend::Backend, T::Type, dims...) = zeros(backend, T, dims)
function zeros(backend::Backend, ::Type{T}, dims::Tuple) where {T}
data = allocate(backend, T, dims...)
fill!(data, zero(T))
Expand All @@ -553,7 +553,7 @@ end

Allocate a storage array appropriate for the computational backend filled with ones.
"""
ones(backend::Backend, T, dims...) = ones(backend, T, dims)
ones(backend::Backend, T::Type, dims...) = ones(backend, T, dims)
function ones(backend::Backend, ::Type{T}, dims::Tuple) where {T}
data = allocate(backend, T, dims)
fill!(data, one(T))
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7 changes: 7 additions & 0 deletions test/test.jl
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Expand Up @@ -307,6 +307,13 @@ function unittest_testsuite(Backend, backend_str, backend_mod, BackendArrayT; sk
@test size(KernelAbstractions.zeros(backend, Float32, 0, 9)) == (0, 9)
end

@testset "Malformed allocations" begin
backend = Backend()
@test_throws MethodError KernelAbstractions.zeros(backend, 2, 2)
@test_throws MethodError KernelAbstractions.ones(backend, 2, 2)
@test_throws MethodError KernelAbstractions.allocate(backend, 2, 2)
end

@kernel cpu = false function gpu_return_kernel!(x)
i = @index(Global)
if i ≤ (length(x) ÷ 2)
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