cpp_try_defer_async_bug.nim

# Run with "nim cpp -r"

import asyncdispatch

# This doesn't work because the Nim compiler generates a goto that
# jumps into a try block.
#
# In C++ you can jump out of a try block, but not into it. In addition,
# jumping out of the try block here isn't valid behavior, because C++
# will execute applicable destructors.
proc test() {.async.} =
    var foo: pointer = nil
    defer:
        # In my real code, foo is a pointer to a non-GC variable that
        # I have to ensure is freed
        foo = nil
    
    await sleepAsync(100)

asyncCheck test()