From eecc26deec1815191bc3405e54ef84daaba853a1 Mon Sep 17 00:00:00 2001
From: chriseth <chris@ethereum.org>
Date: Tue, 13 Mar 2018 17:18:21 +0100
Subject: Make external library functions accessible.

---
 test/libsolidity/SolidityEndToEndTest.cpp                 | 15 +++++++++++++++
 .../syntaxTests/visibility/external_library_function.sol  | 14 ++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 test/libsolidity/syntaxTests/visibility/external_library_function.sol

(limited to 'test')

diff --git a/test/libsolidity/SolidityEndToEndTest.cpp b/test/libsolidity/SolidityEndToEndTest.cpp
index 33cd1419..d8c8b8ad 100644
--- a/test/libsolidity/SolidityEndToEndTest.cpp
+++ b/test/libsolidity/SolidityEndToEndTest.cpp
@@ -6955,6 +6955,21 @@ BOOST_AUTO_TEST_CASE(library_call)
 	ABI_CHECK(callContractFunction("f(uint256)", u256(33)), encodeArgs(u256(33) * 9));
 }
 
+BOOST_AUTO_TEST_CASE(library_function_external)
+{
+	char const* sourceCode = R"(
+		library Lib { function m(bytes b) external pure returns (byte) { return b[2]; } }
+		contract Test {
+			function f(bytes b) public pure returns (byte) {
+				return Lib.m(b);
+			}
+		}
+	)";
+	compileAndRun(sourceCode, 0, "Lib");
+	compileAndRun(sourceCode, 0, "Test", bytes(), map<string, Address>{{"Lib", m_contractAddress}});
+	ABI_CHECK(callContractFunction("f(bytes)", u256(0x20), u256(5), "abcde"), encodeArgs("c"));
+}
+
 BOOST_AUTO_TEST_CASE(library_stray_values)
 {
 	char const* sourceCode = R"(
diff --git a/test/libsolidity/syntaxTests/visibility/external_library_function.sol b/test/libsolidity/syntaxTests/visibility/external_library_function.sol
new file mode 100644
index 00000000..110e74db
--- /dev/null
+++ b/test/libsolidity/syntaxTests/visibility/external_library_function.sol
@@ -0,0 +1,14 @@
+library L {
+    function f(uint) pure external {}
+}
+
+contract C {
+    using L for *;
+
+    function f() public pure {
+        L.f(2);
+        uint x;
+        x.f();
+    }
+}
+// ----
-- 
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