Merge pull request #7773 from ethereum/develop

Merge develop into develop_060

test/libsolidity/syntaxTests/types/library_function_selector.sol

@@ -0,0 +1,13 @@
+library L {
+    function f(uint256) external {}
+    function g(uint256[] storage) external {}
+    function h(uint256[] memory) public {}
+}
+contract C {
+    function f() public pure returns (bytes4 a, bytes4 b, bytes4 c, bytes4 d) {
+        a = L.f.selector;
+        b = L.g.selector;
+        c = L.h.selector;
+        d = L.h.selector;
+    }
+}

test/libsolidity/syntaxTests/types/library_function_selector_internal.sol

@@ -0,0 +1,10 @@
+library L {
+    function f(uint256) internal {}
+}
+contract C {
+    function f() public pure returns (bytes4) {
+        return L.f.selector;
+    }
+}
+// ----
+// TypeError: (126-138): Member "selector" not found or not visible after argument-dependent lookup in function (uint256).

test/libsolidity/syntaxTests/types/library_function_selector_private_inside.sol

@@ -0,0 +1,8 @@
+library L {
+    function f(uint256) private {}
+    function g(uint256) public returns (uint256) {
+        return f.selector;
+    }
+}
+// ----
+// TypeError: (113-123): Member "selector" not found or not visible after argument-dependent lookup in function (uint256).

test/libsolidity/syntaxTests/types/library_function_selector_private_outside.sol

@@ -0,0 +1,10 @@
+library L {
+    function f(uint256) private {}
+}
+contract C {
+    function f() public pure returns (bytes4) {
+        return L.f.selector;
+    }
+}
+// ----
+// TypeError: (125-128): Member "f" not found or not visible after argument-dependent lookup in type(library L).

test/libsolidity/syntaxTests/types/library_function_selector_view_pure.sol

@@ -0,0 +1,10 @@
+library L {
+    function f(uint256) external pure {}
+    function g(uint256) external view {}
+}
+contract C {
+    function f() public pure returns (bytes4, bytes4) {
+        return (L.f.selector, L.g.selector);
+    }
+}
+// ----