diff --git a/test/libsolidity/syntaxTests/constructor/constructor_no_visibility.sol b/test/libsolidity/syntaxTests/constructor/constructor_no_visibility.sol
new file mode 100644
index 000000000..df67c9fae
--- /dev/null
+++ b/test/libsolidity/syntaxTests/constructor/constructor_no_visibility.sol
@@ -0,0 +1,2 @@
+contract A { constructor() public {} }
+// ----
diff --git a/test/libsolidity/syntaxTests/constructor/constructor_no_visibility_050.sol b/test/libsolidity/syntaxTests/constructor/constructor_no_visibility_050.sol
new file mode 100644
index 000000000..0f57a41fb
--- /dev/null
+++ b/test/libsolidity/syntaxTests/constructor/constructor_no_visibility_050.sol
@@ -0,0 +1,4 @@
+pragma experimental "v0.5.0";
+contract A { constructor() {} }
+// ----
+// SyntaxError: (43-59): No visibility specified.
diff --git a/test/libsolidity/syntaxTests/constructor/overriding_constructor.sol b/test/libsolidity/syntaxTests/constructor/overriding_constructor.sol
index 3290a33b3..5fb3a189c 100644
--- a/test/libsolidity/syntaxTests/constructor/overriding_constructor.sol
+++ b/test/libsolidity/syntaxTests/constructor/overriding_constructor.sol
@@ -1,6 +1,10 @@
-// It is fine to "override" constructor of a base class since it is invisible
-contract A { function A() public { } }
+contract A { constructor() public {} }
 contract B is A { function A() public pure returns (uint8) {} }
+contract C is A { function A() public pure returns (uint8) {} }
+contract D is B { function B() public pure returns (uint8) {} }
+contract E is D { function B() public pure returns (uint8) {} }
 // ----
-// Warning: (91-114): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// Warning: (135-178): This declaration shadows an existing declaration.
+// Warning: (57-100): This declaration shadows an existing declaration.
+// Warning: (121-164): This declaration shadows an existing declaration.
+// Warning: (185-228): This declaration shadows an existing declaration.
+// Warning: (249-292): This declaration shadows an existing declaration.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/061_missing_base_constructor_arguments.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/061_missing_base_constructor_arguments.sol
index 0ac48ecf9..8ebb46aa2 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/061_missing_base_constructor_arguments.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/061_missing_base_constructor_arguments.sol
@@ -1,5 +1,4 @@
-contract A { function A(uint a) public { } }
+contract A { constructor(uint a) public { } }
 contract B is A { }
 // ----
-// Warning: (13-42): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// Warning: (24-30): Unused function parameter. Remove or comment out the variable name to silence this warning.
+// Warning: (25-31): Unused function parameter. Remove or comment out the variable name to silence this warning.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/062_base_constructor_arguments_override.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/062_base_constructor_arguments_override.sol
index 0ac48ecf9..8ebb46aa2 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/062_base_constructor_arguments_override.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/062_base_constructor_arguments_override.sol
@@ -1,5 +1,4 @@
-contract A { function A(uint a) public { } }
+contract A { constructor(uint a) public { } }
 contract B is A { }
 // ----
-// Warning: (13-42): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// Warning: (24-30): Unused function parameter. Remove or comment out the variable name to silence this warning.
+// Warning: (25-31): Unused function parameter. Remove or comment out the variable name to silence this warning.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/110_no_overflow_with_large_literal.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/110_no_overflow_with_large_literal.sol
index c3399ddff..9b36fa70b 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/110_no_overflow_with_large_literal.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/110_no_overflow_with_large_literal.sol
@@ -1,8 +1,7 @@
 contract c {
-    function c () public {
+    constructor() public {
         a = 115792089237316195423570985008687907853269984665640564039458;
     }
     uint256 a;
 }
 // ----
-// Warning: (17-119): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/111_overflow_caused_by_ether_units.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/111_overflow_caused_by_ether_units.sol
index 88dc1a314..dc4cab8af 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/111_overflow_caused_by_ether_units.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/111_overflow_caused_by_ether_units.sol
@@ -1,9 +1,8 @@
 contract c {
-    function c () public {
+    constructor() public {
         a = 115792089237316195423570985008687907853269984665640564039458 ether;
     }
     uint256 a;
 }
 // ----
-// Warning: (17-125): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
 // TypeError: (52-118): Type int_const 1157...(70 digits omitted)...0000 is not implicitly convertible to expected type uint256.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/124_enum_member_access.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/124_enum_member_access.sol
index c428bea7c..3fd7a0cba 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/124_enum_member_access.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/124_enum_member_access.sol
@@ -1,11 +1,10 @@
 contract test {
     enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
-    function test()
+    constructor()
     {
         choices = ActionChoices.GoStraight;
     }
     ActionChoices choices;
 }
 // ----
-// Warning: (80-151): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// Warning: (80-151): No visibility specified. Defaulting to "public". 
+// Warning: (80-149): No visibility specified. Defaulting to "public". 
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/126_enum_invalid_member_access.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/126_enum_invalid_member_access.sol
index 32df613ef..079bf0c8a 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/126_enum_invalid_member_access.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/126_enum_invalid_member_access.sol
@@ -1,10 +1,9 @@
 contract test {
     enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
-    function test() public {
+    constructor() public {
         choices = ActionChoices.RunAroundWavingYourHands;
     }
     ActionChoices choices;
 }
 // ----
-// Warning: (80-168): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// TypeError: (123-161): Member "RunAroundWavingYourHands" not found or not visible after argument-dependent lookup in type(enum test.ActionChoices)
+// TypeError: (121-159): Member "RunAroundWavingYourHands" not found or not visible after argument-dependent lookup in type(enum test.ActionChoices)
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/127_enum_invalid_direct_member_access.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/127_enum_invalid_direct_member_access.sol
index f5bd888ae..68510a0a9 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/127_enum_invalid_direct_member_access.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/127_enum_invalid_direct_member_access.sol
@@ -1,10 +1,9 @@
 contract test {
     enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
-    function test() public {
+    constructor() public {
         choices = Sit;
     }
     ActionChoices choices;
 }
 // ----
-// Warning: (80-133): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// DeclarationError: (123-126): Undeclared identifier.
+// DeclarationError: (121-124): Undeclared identifier.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/128_enum_explicit_conversion_is_okay.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/128_enum_explicit_conversion_is_okay.sol
index ed6a1d041..0948d5505 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/128_enum_explicit_conversion_is_okay.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/128_enum_explicit_conversion_is_okay.sol
@@ -1,6 +1,6 @@
 contract test {
     enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
-    function test() public {
+    constructor() public {
         a = uint256(ActionChoices.GoStraight);
         b = uint64(ActionChoices.Sit);
     }
@@ -8,4 +8,3 @@ contract test {
     uint64 b;
 }
 // ----
-// Warning: (80-196): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/129_int_to_enum_explicit_conversion_is_okay.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/129_int_to_enum_explicit_conversion_is_okay.sol
index 2f3a4cdc8..2639decf5 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/129_int_to_enum_explicit_conversion_is_okay.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/129_int_to_enum_explicit_conversion_is_okay.sol
@@ -1,6 +1,6 @@
 contract test {
     enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
-    function test() public {
+    constructor() public {
         a = 2;
         b = ActionChoices(a);
     }
@@ -8,4 +8,3 @@ contract test {
     ActionChoices b;
 }
 // ----
-// Warning: (80-155): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/130_enum_implicit_conversion_is_not_okay_256.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/130_enum_implicit_conversion_is_not_okay_256.sol
index 359deba58..01c5e93fc 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/130_enum_implicit_conversion_is_not_okay_256.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/130_enum_implicit_conversion_is_not_okay_256.sol
@@ -1,10 +1,9 @@
 contract test {
     enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
-    function test() public {
+    constructor() public {
         a = ActionChoices.GoStraight;
     }
     uint256 a;
 }
 // ----
-// Warning: (80-148): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// TypeError: (117-141): Type enum test.ActionChoices is not implicitly convertible to expected type uint256.
+// TypeError: (115-139): Type enum test.ActionChoices is not implicitly convertible to expected type uint256.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/131_enum_implicit_conversion_is_not_okay_64.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/131_enum_implicit_conversion_is_not_okay_64.sol
index af02b2db1..4e21b9aad 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/131_enum_implicit_conversion_is_not_okay_64.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/131_enum_implicit_conversion_is_not_okay_64.sol
@@ -1,10 +1,9 @@
 contract test {
     enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
-    function test() public {
+    constructor() public {
         b = ActionChoices.Sit;
     }
     uint64 b;
 }
 // ----
-// Warning: (80-141): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// TypeError: (117-134): Type enum test.ActionChoices is not implicitly convertible to expected type uint64.
+// TypeError: (115-132): Type enum test.ActionChoices is not implicitly convertible to expected type uint64.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/132_enum_to_enum_conversion_is_not_okay.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/132_enum_to_enum_conversion_is_not_okay.sol
index 054cb34f6..5b9ba813a 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/132_enum_to_enum_conversion_is_not_okay.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/132_enum_to_enum_conversion_is_not_okay.sol
@@ -1,10 +1,9 @@
 contract test {
     enum Paper { Up, Down, Left, Right }
     enum Ground { North, South, West, East }
-    function test() public {
+    constructor() public {
         Ground(Paper.Up);
     }
 }
 // ----
-// Warning: (106-162): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// TypeError: (139-155): Explicit type conversion not allowed from "enum test.Paper" to "enum test.Ground".
+// TypeError: (137-153): Explicit type conversion not allowed from "enum test.Paper" to "enum test.Ground".
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/363_non_payable_constructor.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/363_non_payable_constructor.sol
index 5a6b7b11f..4cd1fcae7 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/363_non_payable_constructor.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/363_non_payable_constructor.sol
@@ -1,5 +1,5 @@
 contract C {
-    function C() { }
+    constructor() { }
 }
 contract D {
     function f() public returns (uint) {
@@ -8,5 +8,4 @@ contract D {
     }
 }
 // ----
-// Warning: (17-33): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// TypeError: (98-111): Member "value" not found or not visible after argument-dependent lookup in function () returns (contract C) - did you forget the "payable" modifier?
+// TypeError: (99-112): Member "value" not found or not visible after argument-dependent lookup in function () returns (contract C) - did you forget the "payable" modifier?
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/366_invalid_array_as_statement.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/366_invalid_array_as_statement.sol
index 150ba9ca7..cc2839cd2 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/366_invalid_array_as_statement.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/366_invalid_array_as_statement.sol
@@ -1,7 +1,6 @@
 contract test {
     struct S { uint x; }
-    function test(uint k) public { S[k]; }
+    constructor(uint k) public { S[k]; }
 }
 // ----
-// Warning: (45-83): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// TypeError: (78-79): Integer constant expected.
+// TypeError: (76-77): Integer constant expected.
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/462_callable_crash.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/462_callable_crash.sol
index 94e81de60..188d00e0f 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/462_callable_crash.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/462_callable_crash.sol
@@ -1,10 +1,9 @@
 contract C {
     struct S { uint a; bool x; }
     S public s;
-    function C() public {
+    constructor() public {
         3({a: 1, x: true});
     }
 }
 // ----
-// Warning: (66-121): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// TypeError: (96-114): Type is not callable
+// TypeError: (97-115): Type is not callable
diff --git a/test/libsolidity/syntaxTests/parsing/enum_valid_declaration.sol b/test/libsolidity/syntaxTests/parsing/enum_valid_declaration.sol
index 4c4a1217e..602c26ed3 100644
--- a/test/libsolidity/syntaxTests/parsing/enum_valid_declaration.sol
+++ b/test/libsolidity/syntaxTests/parsing/enum_valid_declaration.sol
@@ -1,10 +1,9 @@
 contract c {
     enum validEnum { Value1, Value2, Value3, Value4 }
-    function c() {
+    constructor() {
         a = validEnum.Value3;
     }
     validEnum a;
 }
 // ----
-// Warning: (71-121): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
-// Warning: (71-121): No visibility specified. Defaulting to "public". 
+// Warning: (71-122): No visibility specified. Defaulting to "public". 
diff --git a/test/libsolidity/syntaxTests/parsing/literal_constants_with_ether_subdenominations_in_expressions.sol b/test/libsolidity/syntaxTests/parsing/literal_constants_with_ether_subdenominations_in_expressions.sol
index d2cdc8753..e0f49fbf2 100644
--- a/test/libsolidity/syntaxTests/parsing/literal_constants_with_ether_subdenominations_in_expressions.sol
+++ b/test/libsolidity/syntaxTests/parsing/literal_constants_with_ether_subdenominations_in_expressions.sol
@@ -1,10 +1,9 @@
 contract c {
-    function c ()
+    constructor()
     {
          a = 1 wei * 100 wei + 7 szabo - 3;
     }
     uint256 a;
 }
 // ----
-// Warning: (17-86): Defining constructors as functions with the same name as the contract is deprecated. Use "constructor(...) { ... }" instead.
 // Warning: (17-86): No visibility specified. Defaulting to "public".