fix #271, allow src.edges::Vector{MethodInstance} case (#272)

src/abstractinterpret/typeinfer.jl

@@ -229,7 +229,7 @@ function CC.abstract_call(analyzer::AbstractAnalyzer, fargs::Union{Nothing,Vecto
  return ret
 end
 end # @static if IS_AFTER_42529
- 
+
 """
  analyze_task_parallel_code!(analyzer::AbstractAnalyzer, argtypes::Argtypes, sv::InferenceState)
 
@@ -700,7 +700,15 @@ function CC.finish(me::InferenceState, analyzer::AbstractAnalyzer)
  empty!(edges)
  end
  if me.src.edges !== nothing
- append!(s_edges, me.src.edges::Vector{Any})
+ edges = me.src.edges
+ if isa(edges, Vector{Any})
+ append!(s_edges, edges)
+ else
+ # this pass should never happen in ordinal code, but some external 
+ # code generator like IRTools.jl may produce this case
+ # see https://github.com/aviatesk/JET.jl/issues/271
+ append!(s_edges, edges::Vector{MethodInstance})
+ end
  me.src.edges = nothing
  end
  # inspect whether our inference had a limited result accuracy,