Merge pull request #2532 from ethereum/develop

Merge develop to release for 0.4.13.

15 files changed, 179 insertions, 22 deletions

diff --git a/.travis.yml b/.travis.yml
index 34b1152c..315d29bf 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -221,6 +221,7 @@ deploy:
           branch:
             - develop
             - release
+            - /^v[0-9]/
     # This is the deploy target for the native build (Linux and macOS)
     # which generates ZIPs per commit and the source tarball.
     #
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d6ed6643..f7220b17 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ include(EthPolicy)
 eth_policy()
 
 # project name and version should be set after cmake_policy CMP0048
-set(PROJECT_VERSION "0.4.12")
+set(PROJECT_VERSION "0.4.13")
 project(solidity VERSION ${PROJECT_VERSION})
 
 # Let's find our dependencies
diff --git a/Changelog.md b/Changelog.md
index b41852df..4d84d7a1 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,14 @@
+### 0.4.13 (2017-07-06)
+
+Features:
+ * Syntax Checker: Deprecated "throw" in favour of require(), assert() and revert().
+ * Type Checker: Warn if a local storage reference variable does not explicitly use the keyword ``storage``.
+
+Bugfixes:
+ * Code Generator: Correctly unregister modifier variables.
+ * Compiler Interface: Only output AST if analysis was successful.
+ * Error Output: Do not omit the error type.
+
 ### 0.4.12 (2017-07-03)
 
 Features:
diff --git a/docs/bugs_by_version.json b/docs/bugs_by_version.json
index cab79f05..d6802eec 100644
--- a/docs/bugs_by_version.json
+++ b/docs/bugs_by_version.json
@@ -301,6 +301,10 @@
         "bugs": [], 
         "released": "2017-07-03"
     }, 
+    "0.4.13": {
+        "bugs": [], 
+        "released": "2017-07-06"
+    }, 
     "0.4.2": {
         "bugs": [
             "SkipEmptyStringLiteral", 
diff --git a/docs/contributing.rst b/docs/contributing.rst
index 559f9f6a..9d1b2ce3 100644
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -78,10 +78,10 @@ Alternatively, there is a testing script at ``scripts/test.sh`` which executes a
 Whiskers
 ========
 
-*Whiskers* is a templating system similar to `Moustache <https://mustache.github.io>`_. It is used by the
+*Whiskers* is a templating system similar to `Mustache <https://mustache.github.io>`_. It is used by the
 compiler in various places to aid readability, and thus maintainability and verifiability, of the code.
 
-The syntax comes with a substantial difference to Moustache: the template markers ``{{`` and ``}}`` are
+The syntax comes with a substantial difference to Mustache: the template markers ``{{`` and ``}}`` are
 replaced by ``<`` and ``>`` in order to aid parsing and avoid conflicts with :ref:`inline-assembly`
 (The symbols ``<`` and ``>`` are invalid in inline assembly, while ``{`` and ``}`` are used to delimit blocks).
 Another limitation is that lists are only resolved one depth and they will not recurse. This may change in the future.
@@ -91,5 +91,5 @@ A rough specification is the following:
 Any occurrence of ``<name>`` is replaced by the string-value of the supplied variable ``name`` without any
 escaping and without iterated replacements. An area can be delimited by ``<#name>...</name>``. It is replaced
 by as many concatenations of its contents as there were sets of variables supplied to the template system,
-each time replacing any ``<inner>`` items by their respective value. Top-level variales can also be used
-inside such areas.
\ No newline at end of file
+each time replacing any ``<inner>`` items by their respective value. Top-level variables can also be used
+inside such areas.
diff --git a/libsolidity/analysis/ReferencesResolver.cpp b/libsolidity/analysis/ReferencesResolver.cpp
index 2a5f27df..cc95c294 100644
--- a/libsolidity/analysis/ReferencesResolver.cpp
+++ b/libsolidity/analysis/ReferencesResolver.cpp
@@ -289,7 +289,20 @@ void ReferencesResolver::endVisit(VariableDeclaration const& _variable)
 					typeLoc = DataLocation::Memory;
 				}
 				else if (varLoc == Location::Default)
-					typeLoc = _variable.isCallableParameter() ? DataLocation::Memory : DataLocation::Storage;
+				{
+					if (_variable.isCallableParameter())
+						typeLoc = DataLocation::Memory;
+					else
+					{
+						typeLoc = DataLocation::Storage;
+						if (!_variable.isStateVariable())
+							m_errorReporter.warning(
+								_variable.location(),
+								"Variable is declared as a storage pointer. "
+								"Use an explicit \"storage\" keyword to silence this warning."
+							);
+					}
+				}
 				else
 					typeLoc = varLoc == Location::Memory ? DataLocation::Memory : DataLocation::Storage;
 				isPointer = !_variable.isStateVariable();
diff --git a/libsolidity/analysis/SyntaxChecker.cpp b/libsolidity/analysis/SyntaxChecker.cpp
index 02e2fdcf..bde0e616 100644
--- a/libsolidity/analysis/SyntaxChecker.cpp
+++ b/libsolidity/analysis/SyntaxChecker.cpp
@@ -135,6 +135,16 @@ bool SyntaxChecker::visit(Break const& _breakStatement)
 	return true;
 }
 
+bool SyntaxChecker::visit(Throw const& _throwStatement)
+{
+	m_errorReporter.warning(
+		_throwStatement.location(),
+		"\"throw\" is deprecated in favour of \"revert()\", \"require()\" and \"assert()\"."
+	);
+
+	return true;
+}
+
 bool SyntaxChecker::visit(UnaryOperation const& _operation)
 {
 	if (_operation.getOperator() == Token::Add)
diff --git a/libsolidity/analysis/SyntaxChecker.h b/libsolidity/analysis/SyntaxChecker.h
index ec6ac434..fb5cc6d7 100644
--- a/libsolidity/analysis/SyntaxChecker.h
+++ b/libsolidity/analysis/SyntaxChecker.h
@@ -33,6 +33,7 @@ namespace solidity
  *  - whether continue/break is in a for/while loop.
  *  - whether a modifier contains at least one '_'
  *  - issues deprecation warnings for unary '+'
+ *  - issues deprecation warning for throw
  */
 class SyntaxChecker: private ASTConstVisitor
 {
@@ -59,6 +60,8 @@ private:
 	virtual bool visit(Continue const& _continueStatement) override;
 	virtual bool visit(Break const& _breakStatement) override;
 
+	virtual bool visit(Throw const& _throwStatement) override;
+
 	virtual bool visit(UnaryOperation const& _operation) override;
 
 	virtual bool visit(PlaceholderStatement const& _placeholderStatement) override;
diff --git a/libsolidity/analysis/TypeChecker.cpp b/libsolidity/analysis/TypeChecker.cpp
index 1563467c..7306a36d 100644
--- a/libsolidity/analysis/TypeChecker.cpp
+++ b/libsolidity/analysis/TypeChecker.cpp
@@ -854,10 +854,12 @@ bool TypeChecker::visit(VariableDeclarationStatement const& _statement)
 		if (auto ref = dynamic_cast<ReferenceType const*>(type(varDecl).get()))
 		{
 			if (ref->dataStoredIn(DataLocation::Storage))
-				m_errorReporter.warning(
-					varDecl.location(),
-					"Uninitialized storage pointer. Did you mean '<type> memory " + varDecl.name() + "'?"
-				);
+			{
+				string errorText{"Uninitialized storage pointer."};
+				if (varDecl.referenceLocation() == VariableDeclaration::Location::Default)
+					errorText += " Did you mean '<type> memory " + varDecl.name() + "'?";
+				m_errorReporter.warning(varDecl.location(), errorText);
+			}
 		}
 		else if (dynamic_cast<MappingType const*>(type(varDecl).get()))
 			m_errorReporter.typeError(
diff --git a/libsolidity/codegen/ContractCompiler.cpp b/libsolidity/codegen/ContractCompiler.cpp
index c358a519..cad388df 100644
--- a/libsolidity/codegen/ContractCompiler.cpp
+++ b/libsolidity/codegen/ContractCompiler.cpp
@@ -928,7 +928,10 @@ void ContractCompiler::appendModifierOrFunctionCode()
 				);
 			}
 			for (VariableDeclaration const* localVariable: modifier.localVariables())
+			{
+				addedVariables.push_back(localVariable);
 				appendStackVariableInitialisation(*localVariable);
+			}
 
 			stackSurplus =
 				CompilerUtils::sizeOnStack(modifier.parameters()) +
diff --git a/libsolidity/interface/StandardCompiler.cpp b/libsolidity/interface/StandardCompiler.cpp
index e677afc8..15bb7592 100644
--- a/libsolidity/interface/StandardCompiler.cpp
+++ b/libsolidity/interface/StandardCompiler.cpp
@@ -71,7 +71,7 @@ Json::Value formatErrorWithException(
 )
 {
 	string message;
-	string formattedMessage = SourceReferenceFormatter::formatExceptionInformation(_exception, _message, _scannerFromSourceName);
+	string formattedMessage = SourceReferenceFormatter::formatExceptionInformation(_exception, _type, _scannerFromSourceName);
 
 	// NOTE: the below is partially a copy from SourceReferenceFormatter
 	SourceLocation const* location = boost::get_error_info<errinfo_sourceLocation>(_exception);
@@ -271,12 +271,12 @@ Json::Value StandardCompiler::compileInternal(Json::Value const& _input)
 
 		for (auto const& error: m_compilerStack.errors())
 		{
-			auto err = dynamic_pointer_cast<Error const>(error);
+			Error const& err = dynamic_cast<Error const&>(*error);
 
 			errors.append(formatErrorWithException(
 				*error,
-				err->type() == Error::Type::Warning,
-				err->typeName(),
+				err.type() == Error::Type::Warning,
+				err.typeName(),
 				"general",
 				"",
 				scannerFromSourceName
@@ -357,7 +357,7 @@ Json::Value StandardCompiler::compileInternal(Json::Value const& _input)
 	if (errors.size() > 0)
 		output["errors"] = errors;
 
-	bool parsingSuccess = m_compilerStack.state() >= CompilerStack::State::ParsingSuccessful;
+	bool analysisSuccess = m_compilerStack.state() >= CompilerStack::State::AnalysisSuccessful;
 	bool compilationSuccess = m_compilerStack.state() == CompilerStack::State::CompilationSuccessful;
 
 	/// Inconsistent state - stop here to receive error reports from users
@@ -366,7 +366,7 @@ Json::Value StandardCompiler::compileInternal(Json::Value const& _input)
 
 	output["sources"] = Json::objectValue;
 	unsigned sourceIndex = 0;
-	for (auto const& source: parsingSuccess ? m_compilerStack.sourceNames() : vector<string>())
+	for (auto const& source: analysisSuccess ? m_compilerStack.sourceNames() : vector<string>())
 	{
 		Json::Value sourceResult = Json::objectValue;
 		sourceResult["id"] = sourceIndex++;
diff --git a/scripts/release_ppa.sh b/scripts/release_ppa.sh
index 7c9abecb..4fae90ef 100755
--- a/scripts/release_ppa.sh
+++ b/scripts/release_ppa.sh
@@ -15,6 +15,21 @@
 ## It will clone the Solidity git from github, determine the version,
 ## create a source archive and push it to the ubuntu ppa servers.
 ##
+## This requires the following entries in /etc/dput.cf:
+##
+##  [ethereum-dev]
+##  fqdn			= ppa.launchpad.net
+##  method			= ftp
+##  incoming		= ~ethereum/ethereum-dev
+##  login			= anonymous
+## 
+##  [ethereum]
+##  fqdn			= ppa.launchpad.net
+##  method			= ftp
+##  incoming		= ~ethereum/ethereum
+##  login			= anonymous
+
+##
 ##############################################################################
 
 set -ev
@@ -28,10 +43,10 @@ fi
 
 if [ "$branch" = develop ]
 then
-    pparepo=ethereum/ethereum-dev
+    pparepo=ethereum-dev
     ppafilesurl=https://launchpad.net/~ethereum/+archive/ubuntu/ethereum-dev/+files
 else
-    pparepo=ethereum/ethereum
+    pparepo=ethereum
     ppafilesurl=https://launchpad.net/~ethereum/+archive/ubuntu/ethereum/+files
 fi
 
@@ -192,7 +207,8 @@ EMAIL="$email" dch -v 1:${debversion}-${versionsuffix} "git build of ${commithas
 # build source package
 # If packages is rejected because original source is already present, add
 # -sd to remove it from the .changes file
-debuild -S -sa -us -uc
+# -d disables the build dependencies check
+debuild -S -d -sa -us -uc
 
 # prepare .changes file for Launchpad
 sed -i -e s/UNRELEASED/${distribution}/ -e s/urgency=medium/urgency=low/ ../*.changes
@@ -223,6 +239,6 @@ fi
 debsign --re-sign -k ${keyid} ../${packagename}_${debversion}-${versionsuffix}_source.changes
 
 # upload
-dput ppa:${pparepo} ../${packagename}_${debversion}-${versionsuffix}_source.changes
+dput ${pparepo} ../${packagename}_${debversion}-${versionsuffix}_source.changes
 
 done
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
new file mode 100644
index 00000000..f0f3310a
--- /dev/null
+++ b/snap/snapcraft.yaml
@@ -0,0 +1,29 @@
+name: solc
+version: master
+summary: The Solidity Contract-Oriented Programming Language
+description: |
+  Solidity is a contract-oriented, high-level language whose syntax is similar
+  to that of JavaScript and it is designed to target the Ethereum Virtual
+  Machine (EVM).
+
+  Solidity is statically typed, supports inheritance, libraries and complex
+  user-defined types among other features.
+
+  It is possible to create contracts for voting, crowdfunding, blind auctions,
+  multi-signature wallets and more.
+
+grade: devel # must be 'stable' to release into candidate/stable channels
+confinement: strict
+
+apps:
+  solc:
+    command: solc
+    plugs: [home]
+
+parts:
+  solidity:
+    source: .
+    source-type: git
+    plugin: cmake
+    build-packages: [build-essential, libboost-all-dev]
+    stage-packages: [libicu55]
diff --git a/test/libsolidity/SolidityEndToEndTest.cpp b/test/libsolidity/SolidityEndToEndTest.cpp
index a6c01283..c9771fbd 100644
--- a/test/libsolidity/SolidityEndToEndTest.cpp
+++ b/test/libsolidity/SolidityEndToEndTest.cpp
@@ -9696,6 +9696,33 @@ BOOST_AUTO_TEST_CASE(keccak256_assembly)
 	BOOST_CHECK(callContractFunction("i()") == fromHex("0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470"));
 }
 
+BOOST_AUTO_TEST_CASE(multi_modifiers)
+{
+	// This triggered a bug in some version because the variable in the modifier was not
+	// unregistered correctly.
+	char const* sourceCode = R"(
+		contract C {
+			uint public x;
+			modifier m1 {
+				address a1 = msg.sender;
+				x++;
+				_;
+			}
+			function f1() m1() {
+				x += 7;
+			}
+			function f2() m1() {
+				x += 3;
+			}
+		}
+	)";
+	compileAndRun(sourceCode, 0, "C");
+	BOOST_CHECK(callContractFunction("f1()") == bytes());
+	BOOST_CHECK(callContractFunction("x()") == encodeArgs(u256(8)));
+	BOOST_CHECK(callContractFunction("f2()") == bytes());
+	BOOST_CHECK(callContractFunction("x()") == encodeArgs(u256(12)));
+}
+
 BOOST_AUTO_TEST_SUITE_END()
 
 }
diff --git a/test/libsolidity/SolidityNameAndTypeResolution.cpp b/test/libsolidity/SolidityNameAndTypeResolution.cpp
index d0aee3d0..108128f7 100644
--- a/test/libsolidity/SolidityNameAndTypeResolution.cpp
+++ b/test/libsolidity/SolidityNameAndTypeResolution.cpp
@@ -2817,7 +2817,7 @@ BOOST_AUTO_TEST_CASE(uninitialized_mapping_array_variable)
 	char const* sourceCode = R"(
 		contract C {
 			function f() {
-				mapping(uint => uint)[] x;
+				mapping(uint => uint)[] storage x;
 				x;
 			}
 		}
@@ -3103,7 +3103,7 @@ BOOST_AUTO_TEST_CASE(non_initialized_references)
 			}
 			function f()
 			{
-				s x;
+				s storage x;
 				x.a = 2;
 			}
 		}
@@ -5860,6 +5860,18 @@ BOOST_AUTO_TEST_CASE(using_interface_complex)
 	success(text);
 }
 
+BOOST_AUTO_TEST_CASE(warn_about_throw)
+{
+	char const* text = R"(
+		contract C {
+			function f() {
+				throw;
+			}
+		}
+	)";
+	CHECK_WARNING(text, "\"throw\" is deprecated");
+}
+
 BOOST_AUTO_TEST_CASE(bare_revert)
 {
 	char const* text = R"(
@@ -6144,6 +6156,32 @@ BOOST_AUTO_TEST_CASE(shadowing_warning_can_be_removed)
 	CHECK_SUCCESS_NO_WARNINGS(text);
 }
 
+BOOST_AUTO_TEST_CASE(warn_unspecified_storage)
+{
+	char const* text = R"(
+		contract C {
+			struct S { uint a; }
+			S x;
+			function f() {
+				S storage y = x;
+				y;
+			}
+		}
+	)";
+	CHECK_SUCCESS_NO_WARNINGS(text);
+	text = R"(
+		contract C {
+			struct S { uint a; }
+			S x;
+			function f() {
+				S y = x;
+				y;
+			}
+		}
+	)";
+	CHECK_WARNING(text, "is declared as a storage pointer. Use an explicit \"storage\" keyword to silence this warning");
+}
+
 
 BOOST_AUTO_TEST_SUITE_END()