New tests.

test/libsolidity/syntaxTests/constructor/constructer_internal_function_abstract.sol

@@ -0,0 +1,3 @@
+abstract contract A {
+    constructor(function() internal) {}
+}

test/libsolidity/syntaxTests/constructor/constructor_internal_function.sol

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+contract A {
+    constructor(function() internal) {}
+}
+// ----
+// TypeError 4103: (29-49): Internal type is not allowed for public or external functions. You can make the contract abstract to avoid this problem.

test/libsolidity/syntaxTests/constructor/constructor_mapping_memory.sol

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+contract A {
+    constructor(mapping(uint => uint) memory a) {}
+}
+// ----
+// TypeError 4103: (29-59): Types containing (nested) mappings can only be parameters or return variables of internal or library functions. You can make the contract abstract to avoid this problem.
+// TypeError 4061: (29-59): Type mapping(uint256 => uint256) is only valid in storage because it contains a (nested) mapping.

test/libsolidity/syntaxTests/constructor/constructor_mapping_memory_abstract.sol

@@ -0,0 +1,5 @@
+abstract contract A {
+    constructor(mapping(uint => uint) memory a) {}
+}
+// ----
+// TypeError 4061: (38-68): Type mapping(uint256 => uint256) is only valid in storage because it contains a (nested) mapping.

test/libsolidity/syntaxTests/constructor/constructor_storage.sol

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+contract A {
+    constructor(uint[] storage a) {}
+}
+// ----
+// TypeError 3644: (29-45): This parameter has a type that can only be used internally. You can make the contract abstract to avoid this problem.

test/libsolidity/syntaxTests/constructor/constructor_storage_abstract.sol

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+abstract contract A {
+    constructor(uint[] storage a) {}
+}

test/libsolidity/syntaxTests/constructor/nonabiv2_type.sol

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+contract C {
+	constructor(uint[][][] memory t) {}
+}
+// ----
+// TypeError 4957: (26-45): This type is only supported in ABIEncoderV2. Use "pragma experimental ABIEncoderV2;" to enable the feature. Alternatively, make the contract abstract and supply the constructor arguments from a derived contract.

test/libsolidity/syntaxTests/constructor/nonabiv2_type_abstract.sol

@@ -0,0 +1,4 @@
+abstract contract C {
+	constructor(uint[][][] memory t) {}
+}
+// ----