isdefined check in locals() (#396)

* isdefined check in locals() Co-authored-by: Tim Holy <[email protected]> Co-authored-by: Kristoffer Carlsson <[email protected]>
JuliaLang · Jun 2, 2020 · df49d29 · df49d29
1 parent 4d043af
commit df49d29
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diff --git a/src/utils.jl b/src/utils.jl
@@ -425,7 +425,9 @@ function locals(frame::Frame)
         if var.name === Symbol("#self#")
             for field in fieldnames(typeof(var.value))
                 field = field::Symbol
-                push!(vars, Variable(getfield(var.value, field), field, false, true))
+                if isdefined(var.value, field)
+                    push!(vars, Variable(getfield(var.value, field), field, false, true))
+                end
             end
         end
     end

diff --git a/test/interpret.jl b/test/interpret.jl
@@ -640,3 +640,11 @@ end
     D = Diagonal([1.0, 2.0])
     @test @interpret(f(D)) === f(D)
 end
+
+struct A396
+    a::Int
+end
+@testset "constructor locals" begin
+    frame = JuliaInterpreter.enter_call(A396, 3)
+    @test length(JuliaInterpreter.locals(frame)) > 0
+end