LocalScan assertion failure

[tomyun]

It's redirected from yuyichao/FunctionWrappers.jl#23.

julia> using FunctionWrappers, TimeZones

julia> f = () -> ZonedDateTime(2021, tz"UTC")
#1 (generic function with 1 method)

julia> f()
2021-01-01T00:00:00+00:00

julia> FunctionWrappers.FunctionWrapper{ZonedDateTime,Tuple{}}(f)
Assertion failed: (SRet), function LocalScan, file /Users/julia/buildbot/worker/package_macos64/build/src/llvm-late-gc-lowering.cpp, line 1454.

signal (6): Abort trap: 6
in expression starting at REPL[5]:1
__pthread_kill at /usr/lib/system/libsystem_kernel.dylib (unknown line)
Allocations: 3020216 (Pool: 3017957; Big: 2259); GC: 4
fish: Job 1, 'julia --project' terminated by signal SIGABRT (Abort)

The crash confirmed with FunctionWrappers 1.1.2 on Julia 1.5 and 1.6. It used to work fine with FunctionWrappers 1.1.1.

A major change between 1.1.1 and 1.1.2 includes yuyichao/FunctionWrappers.jl#15 where the use of isbitstype() was replaced by Base.allocatedinline().

[tomyun]

In other words, this error seems to only happen with non-bits types stored inline.

julia> Base.allocatedinline(ZonedDateTime)
true

julia> Base.isbitstype(ZonedDateTime)
false

[tomyun]

Still present in the latest nightly 1.8.0-DEV.7.