fix test for now

Author: aviatesk

test/compiler/inference.jl

@@ -1252,7 +1252,17 @@ end
 push!(constvec, 10)
 @test @inferred(sizeof_constvec()) == sizeof(Int) * 4
 
-test_const_return((x)->isdefined(x, :re), Tuple{ComplexF64}, true)
+let
+    f = x->isdefined(x, :re)
+    t = Tuple{ComplexF64}
+    interp = Core.Compiler.NativeInterpreter()
+    linfo = get_linfo(f, t)
+    ci = Core.Compiler.getindex(Core.Compiler.code_cache(interp), get_linfo(f, t))
+    rc = ci.rettype_const
+    @test isa(rc, Core.InterConditional)
+    @test rc.vtype === ComplexF64 && rc.elsetype === Union{}
+end
+
 isdefined_f3(x) = isdefined(x, 3)
 @test @inferred(isdefined_f3(())) == false
 @test find_call(first(code_typed(isdefined_f3, Tuple{Tuple{Vararg{Int}}})[1]), isdefined, 3)