BoundsError in zero length map with "--inline=no" set.

[MichaelHatherly]

The following sequence reliably produces a BoundsError on current master for me:

$ julia-0.4 --inline=no
               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
   _ _   _| |_  __ _   |  Type "help()" for help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.4.0-dev+2607 (2015-01-11 06:43 UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit 02c0501 (0 days old master)
|__/                   |  x86_64-unknown-linux-gnu

julia> f(args...) = map(a -> a, args)
f (generic function with 1 method)

julia> f()
ERROR: BoundsError: attempt to access ()
  at index [1]
 in f at none:1
 in eval at no file

When --inline is not passed then f() returns () as expected. This does not affect 0.3-release as far as I can see since there is no --inline=no flag.

Declaring the function with @noinline does not produce the error:

julia> @noinline f(args...) = map(a -> a, args)
f (generic function with 1 method)

julia> f()
()

This error breaks @which when it is passed a zero argument method call since Base.typesof uses map is a similar manner to f in the example provided here.

[timholy]

Seems likely to be the same bug as #9536, but this is a more direct way to trigger it.

[MichaelHatherly]

Closed as dup of #9536.