add tests for issues #10207, #10178, #12939

Author: JeffBezanson

test/core.jl

@@ -81,6 +81,22 @@ _bound_vararg_specificity_1{T}(::Type{Array{T,1}}, d::Int) = 1
 @test _bound_vararg_specificity_1(Array{Int,1}, 1) == 1
 @test _bound_vararg_specificity_1(Array{Int,2}, 1, 1) == 0
 
+# issue #12939
+module Issue12939
+abstract type Abs; end
+struct Foo <: Abs; end
+struct Bar; val::Int64; end
+struct Baz; val::Int64; end
+f{T}(::Type{T}, x::T) = T(3)
+f{T <: Abs}(::Type{Bar}, x::T) = Bar(2)
+f(::Type{Bar}, x) = Bar(1)
+f(::Type{Baz}, x) = Baz(1)
+f{T <: Abs}(::Type{Baz}, x::T) = Baz(2)
+end
+
+@test Issue12939.f(Issue12939.Baz,Issue12939.Foo()) === Issue12939.Baz(2)
+@test Issue12939.f(Issue12939.Bar,Issue12939.Foo()) === Issue12939.Bar(2)
+
 # issue #11840
 TT11840{T} = Tuple{T,T}
 f11840(::Type) = "Type"

test/inference.jl

@@ -738,3 +738,10 @@ let e = code_typed(f21175, ())[1].first.code[1]::Expr
     @test e.head === :return
     @test e.args[1] == Core.QuoteNode(902221)
 end
+
+# issue #10207
+type T10207{A, B}
+    a::A
+    b::B
+end
+@test code_typed(T10207, (Int,Any))[1].second == T10207{Int,T} where T

test/staged.jl

@@ -213,3 +213,15 @@ end
 
 # issue #19897
 @test code_lowered(staged_t1, (Int,Int)) isa Array  # check no error thrown
+
+# issue #10178
+@generated function f10178(x::X) where X
+    :(x)
+end
+g10178(x) = f10178(x)
+@test g10178(5) == 5
+@generated function f10178(x::X) where X
+    :(2x)
+end
+g10178(x) = f10178(x)
+@test g10178(5) == 10