New test cases.

test/libsolidity/syntaxTests/dataLocations/data_location_in_function_type.sol

@@ -0,0 +1,11 @@
+library L {
+    struct Nested { uint y; }
+    // data location specifier in function signature should be optional even if there are multiple choices
+    function a(function(Nested) external returns (uint)[] storage) external pure {}
+    function b(function(Nested calldata) external returns (uint)[] storage) external pure {}
+    function c(function(Nested memory) external returns (uint)[] storage) external pure {}
+    function d(function(Nested storage) external returns (uint)[] storage) external pure {}
+}
+
+// ----
+// TypeError: (441-447): Location has to be calldata or memory for function type of external function. Remove the data location keyword to fix this error.

test/libsolidity/syntaxTests/dataLocations/externalFunction/external_function_return_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+contract C {
+    function i() external pure returns(uint[]) {}
+}
+// ----
+// TypeError: (52-58): Storage location must be "memory" for parameter in external function, but none was given.

test/libsolidity/syntaxTests/dataLocations/function_parameters_with_data_location_fine.sol

@@ -0,0 +1,10 @@
+contract C {
+    // Warning for no data location provided can be silenced with storage or memory.
+    function f(uint[] memory, uint[] storage) private pure {}
+    function g(uint[] memory, uint[] storage) internal pure {}
+    function h(uint[] memory) public pure {}
+    // No warning on external functions, because of default to calldata.
+    function i(uint[]) external pure {}
+    // No warning for events.
+    event e(uint[]);
+}

test/libsolidity/syntaxTests/dataLocations/function_return_parameters_with_data_location_fine.sol

@@ -0,0 +1,7 @@
+contract C {
+    // Shows that the warning for no data location provided can be silenced with storage or memory.
+    function f() private pure returns(uint[] memory, uint[] storage b) { b = b; }
+    function g() internal pure returns(uint[] memory, uint[] storage b) { b = b; }
+    function h() public pure returns(uint[] memory) {}
+    function i() external pure returns(uint[] memory) {}
+}

test/libsolidity/syntaxTests/dataLocations/function_type_array_as_reference_type.sol

@@ -0,0 +1,10 @@
+contract C {
+    struct Nested { uint y; }
+    // ensure that we consider array of function pointers as reference type
+    function a(function(Nested) external returns (uint)[]) public pure {}
+    function b(function(Nested) external returns (uint)[] storage) public pure {}
+    function c(function(Nested) external returns (uint)[] memory) public pure {}
+    function d(function(Nested) external returns (uint)[] calldata) public pure {}
+}
+// ----
+// TypeError: (208-250): Location has to be memory for public function. Remove the data location keyword to fix this error.

test/libsolidity/syntaxTests/dataLocations/internalFunction/internal_function_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+contract C {
+    function g(uint[]) internal pure {}
+}
+// ----
+// TypeError: (28-34): Storage location must be "storage" or "memory" for parameter in internal function, but none was given.

test/libsolidity/syntaxTests/dataLocations/internalFunction/internal_function_return_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+contract C {
+    function g() internal pure returns(uint[]) {}
+}
+// ----
+// TypeError: (52-58): Storage location must be "storage" or "memory" for parameter in internal function, but none was given.

test/libsolidity/syntaxTests/dataLocations/libraries/library_function_parameters_with_data_location_fine.sol

@@ -0,0 +1,8 @@
+library L {
+    // Warning for no data location provided can be silenced with storage or memory.
+    function f(uint[] memory, uint[] storage) private pure {}
+    function g(uint[] memory, uint[] storage) internal pure {}
+    function h(uint[] memory) public pure {}
+    // No warning on external functions, because of default to calldata.
+    function i(uint[]) external pure {}
+}

test/libsolidity/syntaxTests/dataLocations/libraries/library_internal_function_return_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+library L {
+    function g(uint[]) internal pure {}
+}
+// ----
+// TypeError: (27-33): Storage location must be "storage" or "memory" for parameter in internal function, but none was given.

test/libsolidity/syntaxTests/dataLocations/libraries/library_private_function_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+library L {
+    function h(uint[]) public pure {}
+}
+// ----
+// TypeError: (27-33): Storage location must be "storage" or "memory" for parameter in public function, but none was given.

test/libsolidity/syntaxTests/dataLocations/libraries/library_public_function_return_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+library L {
+    function h(uint[]) public pure {}
+}
+// ----
+// TypeError: (27-33): Storage location must be "storage" or "memory" for parameter in public function, but none was given.

test/libsolidity/syntaxTests/dataLocations/privateFunction/private_function_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+contract C {
+    function f(uint[]) private pure {}
+}
+// ----
+// TypeError: (28-34): Storage location must be "storage" or "memory" for parameter in private function, but none was given.

test/libsolidity/syntaxTests/dataLocations/privateFunction/private_function_return_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+contract C {
+    function f() private pure returns(uint[]) {}
+}
+// ----
+// TypeError: (51-57): Storage location must be "storage" or "memory" for parameter in private function, but none was given.

test/libsolidity/syntaxTests/dataLocations/publicFunction/public_function_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+contract C {
+    function h(uint[]) public pure {}
+}
+// ----
+// TypeError: (28-34): Storage location must be "memory" for parameter in public function, but none was given.

test/libsolidity/syntaxTests/dataLocations/publicFunction/public_function_return_parameters_no_data_location.sol

@@ -0,0 +1,5 @@
+contract C {
+    function h() public pure returns(uint[]) {}
+}
+// ----
+// TypeError: (50-56): Storage location must be "memory" for parameter in public function, but none was given.

test/libsolidity/syntaxTests/nameAndTypeResolution/constant_mapping.sol

@@ -0,0 +1,8 @@
+contract C {
+    // This should probably have a better error message at some point.
+    // Constant mappings should not be possible in general.
+    mapping(uint => uint) constant x;
+}
+// ----
+// TypeError: (148-180): Constants of non-value type not yet implemented.
+// TypeError: (148-180): Uninitialized "constant" variable.

test/libsolidity/syntaxTests/types/mapping/mapping_array_data_location_function_param_external.sol

@@ -0,0 +1,6 @@
+contract c {
+    function f1(mapping(uint => uint)[] calldata) pure external {}
+}
+// ----
+// TypeError: (29-52): Type is required to live outside storage.
+// TypeError: (29-52): Internal or recursive type is not allowed for public or external functions.

test/libsolidity/syntaxTests/types/mapping/mapping_data_location_function_param_external.sol

@@ -0,0 +1,6 @@
+contract c {
+    function f1(mapping(uint => uint) calldata) pure external returns (mapping(uint => uint) memory) {}
+}
+// ----
+// TypeError: (29-50): Type is required to live outside storage.
+// TypeError: (29-50): Internal or recursive type is not allowed for public or external functions.

test/libsolidity/syntaxTests/types/mapping/mapping_data_location_function_param_internal.sol

@@ -0,0 +1,4 @@
+contract c {
+    function f4(mapping(uint => uint) memory) pure internal {}
+}
+// ----

test/libsolidity/syntaxTests/types/mapping/mapping_data_location_function_param_public.sol

@@ -0,0 +1,6 @@
+contract c {
+    function f3(mapping(uint => uint) memory) view public {}
+}
+// ----
+// TypeError: (29-50): Type is required to live outside storage.
+// TypeError: (29-50): Internal or recursive type is not allowed for public or external functions.