Correctly check for string prefix plus indentation change.

libsolidity/ExpressionCompiler.cpp

@@ -291,7 +291,7 @@ void ExpressionCompiler::endVisit(MemberAccess const& _memberAccess)
 								 IntegerType(0, IntegerType::Modifier::ADDRESS), true);
 			m_context << eth::Instruction::BALANCE;
 		}
-		else if (member == "send" || member.substr(0, 4) == "call")
+		else if (member == "send" || member.substr(0, min<size_t>(member.size(), 4)) == "call")
 			appendTypeConversion(*_memberAccess.getExpression().getType(),
 								 IntegerType(0, IntegerType::Modifier::ADDRESS), true);
 		else

libsolidity/Types.cpp

@@ -193,13 +193,17 @@ u256 IntegerType::literalValue(Literal const& _literal) const
 }
 
 const MemberList IntegerType::AddressMemberList =
-		MemberList({{"balance", make_shared<IntegerType const>(256)},
+	MemberList({{"balance",
-					{"callstring32", make_shared<FunctionType const>(TypePointers({make_shared<StaticStringType const>(32)}),
+					make_shared<IntegerType const>(256)},
+				{"callstring32",
+					make_shared<FunctionType const>(TypePointers({make_shared<StaticStringType const>(32)}),
 													TypePointers(), FunctionType::Location::BARE)},
-					{"callstring32string32", make_shared<FunctionType const>(TypePointers({make_shared<StaticStringType const>(32),
+				{"callstring32string32",
+					make_shared<FunctionType const>(TypePointers({make_shared<StaticStringType const>(32),
 																  make_shared<StaticStringType const>(32)}),
 													TypePointers(), FunctionType::Location::BARE)},
-					{"send", make_shared<FunctionType const>(TypePointers({make_shared<IntegerType const>(256)}),
+				{"send",
+					make_shared<FunctionType const>(TypePointers({make_shared<IntegerType const>(256)}),
 													TypePointers(), FunctionType::Location::SEND)}});
 
 shared_ptr<StaticStringType> StaticStringType::smallestTypeForLiteral(string const& _literal)