An undefined variable doesn't raise an error

[IainNZ]

Thing to look for is that junk in Weirdness is not defined

type Weird
    ext
end
Weird() = Weird(Dict())

type FooType
end
FooType(ng) = FooType()

function Weirdness()
    w = Weird()
    w.ext[:Iain] = FooType(junk)
    return w
end

versioninfo()
@show Weirdness()

On Julia 0.4.1:

$ jl WeirdStuff.jl
Julia Version 0.4.1
Commit cbe1bee* (2015-11-08 10:33 UTC)
Platform Info:
  System: Darwin (x86_64-apple-darwin15.0.0)
  CPU: Intel(R) Core(TM) i7-4960HQ CPU @ 2.60GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Haswell)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.3
Weirdness() = Weird(Dict{Any,Any}(:Iain=>FooType()))

On master, just built:

$ j5 WeirdStuff.jl
Julia Version 0.5.0-dev+2432
Commit d550b37* (2016-01-31 15:11 UTC)
Platform Info:
  System: Darwin (x86_64-apple-darwin15.2.0)
  CPU: Intel(R) Core(TM) i7-4960HQ CPU @ 2.60GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Haswell)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.7.1
Weirdness() = Weird(Dict{Any,Any}(:Iain=>FooType()))

EDIT1: reduced complexity of code

EDIT2: no need for the kwargs

[IainNZ]

Oh, and one more piece of info: this is a reduced case, obviously. In the original case, I didn't even notice my mistake until it ran on Travis and failed - so something about Travis is different, possibly

[yuyichao]

The travis failure is probably due to no inlining.

[JeffBezanson]

Yep, inlining bug.

[KristofferC]

Is this related? I acidentally added a random unicode character (a subscript k) to a line but all the tests passed. Is it because the statement was "effect free" and thus got dead code eliminated or something like that?

[yuyichao]

That one should be fixed by #14756

[KristofferC]

Ah, ok. Thanks.

[IainNZ]

This is still reproducible on master

[mschauer]

@IainNZ Can be closed, right?

[IainNZ]

@mschauer Can it? Does not happen anymore?

[IainNZ]

Still was happening 12 days ago

[yuyichao]

Seems to be fixed now. But need a test.