Fixed bad cast when abiEncodeCall receives a tuple from a function.

test/libsolidity/syntaxTests/abiEncoder/abi_encodeCall_tuple_from_assignment_expression.sol

@@ -0,0 +1,24 @@
+contract C {
+    function g0() internal pure {}
+    function g2() internal pure returns (uint, uint) { return (2, 3); }
+
+    function f0() public {}
+    function f2(uint, uint) public {}
+
+    function h() public view {
+        uint a;
+        uint b;
+
+        abi.encodeCall(this.f0, () = g0());
+        abi.encodeCall(this.f0, () = ());
+        abi.encodeCall(this.f2, (a, b) = g2());
+        abi.encodeCall(this.f2, (a, b) = (2, 3));
+    }
+}
+// ----
+// TypeError 5547: (284-286): Empty tuple on the left hand side.
+// TypeError 9062: (284-293): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 5547: (328-330): Empty tuple on the left hand side.
+// TypeError 9062: (328-335): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 9062: (370-383): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 9062: (418-433): Expected an inline tuple, not an expression of a tuple type.

test/libsolidity/syntaxTests/abiEncoder/abi_encodeCall_tuple_from_conditional_ternary_expression.sol

@@ -0,0 +1,17 @@
+contract C {
+    function g0() internal pure {}
+    function g2() internal pure returns (uint, uint) { return (2, 3); }
+
+    function f0() public {}
+    function f2(uint, uint) public {}
+
+    function h() public view {
+        abi.encodeCall(this.f0, true ? g0() : g0());
+        abi.encodeCall(this.f2, true ? g2() : g2());
+        abi.encodeCall(this.f2, true ? (1, 2) : (3, 4));
+    }
+}
+// ----
+// TypeError 9062: (251-269): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 9062: (304-322): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 9062: (357-379): Expected an inline tuple, not an expression of a tuple type.

test/libsolidity/syntaxTests/abiEncoder/abi_encodeCall_tuple_from_error_event.sol

@@ -0,0 +1,16 @@
+contract C {
+    event Ev();
+    error Er();
+
+    function f0() public {}
+
+    function h() public view {
+        abi.encodeCall(this.f0, Ev());
+        abi.encodeCall(this.f0, Er());
+        abi.encodeCall(this.f0, revert());
+    }
+}
+// ----
+// TypeError 9062: (138-142): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 9062: (177-181): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 9062: (216-224): Expected an inline tuple, not an expression of a tuple type.

test/libsolidity/syntaxTests/abiEncoder/abi_encodeCall_tuple_from_invalid_operator.sol

@@ -0,0 +1,23 @@
+contract C {
+    event Ev();
+    error Er();
+
+    function g0() internal pure {}
+    function g2() internal pure returns (uint, uint) { return (2, 3); }
+
+    function f0() public {}
+    function f2(uint, uint) public {}
+
+    function h() public view {
+        abi.encodeCall(this.f2, (1, 1) + (2, 2));
+        abi.encodeCall(this.f0, Ev() / Er());
+        abi.encodeCall(this.f0, !());
+    }
+}
+// ----
+// TypeError 2271: (284-299): Operator + not compatible with types tuple(int_const 1,int_const 1) and tuple(int_const 2,int_const 2)
+// TypeError 9062: (284-299): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 2271: (334-345): Operator / not compatible with types tuple() and tuple()
+// TypeError 9062: (334-345): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 4907: (380-383): Unary operator ! cannot be applied to type tuple()
+// TypeError 9062: (380-383): Expected an inline tuple, not an expression of a tuple type.

test/libsolidity/syntaxTests/abiEncoder/abi_encodeCall_tuple_returned_from_function.sol

@@ -0,0 +1,22 @@
+contract C {
+    function g0() internal pure {}
+    function g2() internal pure returns (uint, uint) { return (2, 3); }
+
+    function f0() public {}
+    function f2(uint, uint) public {}
+
+    function h() public view {
+        abi.encodeCall(this.f0, g0());
+        abi.encodeCall(this.f2, g2());
+
+        abi.encodeCall(this.f0, (g0()));
+        abi.encodeCall(this.f2, (g2()));
+    }
+}
+// ----
+// TypeError 9062: (251-255): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 9062: (290-294): Expected an inline tuple, not an expression of a tuple type.
+// TypeError 6473: (331-335): Tuple component cannot be empty.
+// TypeError 7788: (306-337): Expected 0 instead of 1 components for the tuple parameter.
+// TypeError 7788: (347-378): Expected 2 instead of 1 components for the tuple parameter.
+// TypeError 5407: (372-376): Cannot implicitly convert component at position 0 from "tuple(uint256,uint256)" to "uint256".

test/libsolidity/syntaxTests/abiEncoder/abi_encodeCall_unitary_tuple_from_assignment_expression.sol

@@ -0,0 +1,13 @@
+contract C {
+    function g1() internal pure returns (uint) { return (1); }
+
+    function f1(uint) public {}
+
+    function h() public view {
+        uint a;
+
+        abi.encodeCall(this.f1, (a) = g1());
+        abi.encodeCall(this.f1, (a) = (1));
+    }
+}
+// ----

test/libsolidity/syntaxTests/abiEncoder/abi_encodeCall_unitary_tuple_from_conditional_ternary_expression.sol

@@ -0,0 +1,11 @@
+contract C {
+    function g1() internal pure returns (uint) { return (1); }
+
+    function f1(uint) public {}
+
+    function h() public view {
+        abi.encodeCall(this.f1, true ? (1) : (2));
+        abi.encodeCall(this.f1, true ? g1() : g1());
+    }
+}
+// ----

test/libsolidity/syntaxTests/abiEncoder/abi_encodeCall_unitary_tuple_returned_from_function.sol

@@ -0,0 +1,14 @@
+contract C {
+    function g1() internal pure returns (uint) { return (1); }
+    function g2() internal pure returns (uint, uint) { return (2, 3); }
+
+    function f1(uint) public {}
+    function f2(uint, uint) public {}
+
+    function h() public view {
+        abi.encodeCall(this.f1, g1());
+        abi.encodeCall(this.f1, (g1()));
+        abi.encodeCall(this.f2, (g1(), g1()));
+    }
+}
+// ----