<< StackOverflowError instead of MethodError

[goretkin]

The definition

<<(x::Integer, c::Unsigned) = c <= typemax(UInt) ? x << (c % UInt) : zero(x)

julia/base/operators.jl

Line 568 in 89a2c08

<<(x::Integer, c::Unsigned) = c <= typemax(UInt) ? x << (c % UInt) : zero(x)

loops. For example

julia> using GeometryTypes
julia> OffsetInteger{-1}(3) << UInt(2)
ERROR: StackOverflowError:
Stacktrace:
 [1] <<(::OffsetInteger{-1,Int64}, ::UInt64) at ./operators.jl:568 (repeats 80000 times)

or, self-contained

julia> struct A <: Integer
       end

julia> A() << UInt(2)
ERROR: StackOverflowError:
Stacktrace:
 [1] <<(::A, ::UInt64) at ./operators.jl:568 (repeats 80000 times)

Obviously, to get << working, I need to define an additional method, which would be more specific and prevent infinite recursion. So I'm not sure if this counts as a bug. Making an issue just in case there's a way to fix it to get a MethodError instead.

Related: #26552

julia> versioninfo()
Julia Version 1.0.2
Commit d789231e99 (2018-11-08 20:11 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin14.5.0)
  CPU: Intel(R) Core(TM) i7-4960HQ CPU @ 2.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.0 (ORCJIT, haswell)

[vtjnash]

Fixed by 9562bdf (#30906)