Clean up visibility via contract name and fix ICE on calling unimplemented base function.

test/libsolidity/syntaxTests/nameAndTypeResolution/145_external_base_visibility.sol

@@ -5,4 +5,4 @@ contract derived is base {
     function g() public { base.f(); }
 }
 // ----
-// TypeError: (100-106): Member "f" not found or not visible after argument-dependent lookup in type(contract base).
+// TypeError: (100-108): Cannot call function via contract type name.

test/libsolidity/syntaxTests/types/call_unimplemented_internal_function.sol

@@ -0,0 +1,6 @@
+abstract contract A {
+    function f() public virtual;
+    function g() public {
+        f();
+    }
+}

test/libsolidity/syntaxTests/types/contractTypeType/members/assign_function_via_base_name_to_var.sol

@@ -0,0 +1,14 @@
+contract A {
+    function f() external {}
+    function g() external pure {}
+}
+
+contract B is A {
+    function h() external {
+        function() external f = A.f;
+        function() external pure g = A.g;
+    }
+}
+// ----
+// TypeError: (133-160): Type function A.f() is not implicitly convertible to expected type function () external.
+// TypeError: (170-202): Type function A.g() pure is not implicitly convertible to expected type function () pure external.

test/libsolidity/syntaxTests/types/contractTypeType/members/base_contract.sol

@@ -0,0 +1,11 @@
+contract B {
+    function f() external {}
+    function g() public {}
+}
+contract C is B {
+    function h() public {
+        B.f.selector;
+        B.g.selector;
+        B.g();
+    }
+}

test/libsolidity/syntaxTests/types/contractTypeType/members/base_contract_invalid.sol

@@ -0,0 +1,13 @@
+contract B {
+    function f() external {}
+    function g() internal {}
+}
+contract C is B {
+    function i() public {
+        B.f();
+        B.g.selector;
+    }
+}
+// ----
+// TypeError: (125-130): Cannot call function via contract type name.
+// TypeError: (140-152): Member "selector" not found or not visible after argument-dependent lookup in function ().

test/libsolidity/syntaxTests/types/contractTypeType/members/call_function_via_contract_name.sol

@@ -12,6 +12,6 @@ contract B {
     }
 }
 // ----
-// TypeError: (160-165): Cannot call function via contract name.
-// TypeError: (175-180): Cannot call function via contract name.
-// TypeError: (190-195): Cannot call function via contract name.
+// TypeError: (160-165): Cannot call function via contract type name.
+// TypeError: (175-180): Cannot call function via contract type name.
+// TypeError: (190-195): Cannot call function via contract type name.

test/libsolidity/syntaxTests/types/contractTypeType/members/call_unimplemented_base.sol

@@ -0,0 +1,10 @@
+abstract contract B {
+    function f() public virtual;
+}
+contract C is B {
+    function f() public override {
+        B.f();
+    }
+}
+// ----
+// TypeError: (118-123): Cannot call unimplemented base function.

test/libsolidity/syntaxTests/types/contractTypeType/members/modifier.sol

@@ -0,0 +1,10 @@
+contract A {
+    modifier mod() { _; }
+}
+contract B {
+    function f() public {
+        A.mod;
+    }
+}
+// ----
+// TypeError: (88-93): Member "mod" not found or not visible after argument-dependent lookup in type(contract A).

test/libsolidity/syntaxTests/types/contractTypeType/members/modifier_base.sol

@@ -0,0 +1,10 @@
+contract A {
+    modifier mod() { _; }
+}
+contract B is A {
+    function f() public {
+        A.mod;
+    }
+}
+// ----
+// TypeError: (93-98): Member "mod" not found or not visible after argument-dependent lookup in type(contract A).

test/libsolidity/syntaxTests/types/contractTypeType/members/struct_enum.sol

@@ -0,0 +1,14 @@
+contract A {
+    struct S { uint256 a; }
+    enum E { V }
+}
+contract B {
+    A.S x;
+    A.E e;
+}
+contract C is A {
+    A.S x;
+    S y;
+    A.E e;
+    E f;
+}

test/libsolidity/syntaxTests/types/library_internal_call.sol

@@ -0,0 +1,4 @@
+library L {
+    function a() public pure {}
+    function b() public pure { a(); }
+}