Open
Description
openedon Jun 27, 2018
Found while working on #27736:
julia> # removing the `S` here fixes the segfault
function g(x::T) where {T,S}
cf = @cfunction identity Ref{T} (Ref{T},)
GC.@preserve cf begin
fptr = Base.unsafe_convert(Ptr{Cvoid}, cf)
ccall(fptr, Ref{T}, (Ref{T},), x)
end
end
g (generic function with 1 method)
julia> g(1)
[1] 35506 segmentation fault julia
julia> versioninfo()
Julia Version 0.7.0-beta.9
Commit d7bf89fc1c (2018-06-25 13:53 UTC)
Platform Info:
OS: macOS (x86_64-apple-darwin17.5.0)
CPU: Intel(R) Core(TM) i7-7920HQ CPU @ 3.10GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-6.0.0 (ORCJIT, skylake)
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