Compiler crash with ===()

[akosuas]

I can get the following on Julia 1.6.1:

julia> foo() = ===(0)
foo (generic function with 1 method)

julia> foo()
Internal error: encountered unexpected error in runtime:
BoundsError(a=Array{Any, (2,)}[
  Main.:(===),
  0], i=(3,))
jl_bounds_error_ints at /buildworker/worker/package_linux64/build/src/rtutils.c:186

The syntax may indeed be invalid, but it doesn't produce a friendly error.

[simeonschaub]

Duplicate of #40804

[akosuas]

Thanks!

Edit: Oh wow, they used the exact same example! haha