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-- busted helper file to prevent crashes on LuaJIT ffi module being
-- garbage collected due to Busted cleaning up the test environment
--
-- usage:
-- busted --helper=spec/helper.lua
-- only apply when we're running LuaJIT
local isJit = (tostring(assert):match('builtin') ~= nil)
if isJit then
-- pre-load the ffi module, such that it becomes part of the environment
-- and Busted will not try to GC and reload it. The ffi is not suited
-- for that and will occasionally segfault if done so.
local ffi = require "ffi"
-- Now patch ffi.cdef to only be called once with each definition, as it
-- will error on re-registering.
local old_cdef = ffi.cdef
local exists = {}
ffi.cdef = function(def)
if exists[def] then return end
exists[def] = true
return old_cdef(def)
end
end
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