From c01426efecb82375c7c732f8c385b38cb9259168 Mon Sep 17 00:00:00 2001
From: Alex Beregszaszi <alex@rtfs.hu>
Date: Sat, 26 Nov 2016 15:23:32 +0000
Subject: [PATCH] Make position optional in dev::validate

---
 libdevcore/UTF8.h                    | 6 ++++++
 libsolidity/ast/ASTJsonConverter.cpp | 3 +--
 libsolidity/ast/Types.cpp            | 3 +--
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/libdevcore/UTF8.h b/libdevcore/UTF8.h
index 9bdc2b4f2..b82fd1c6d 100644
--- a/libdevcore/UTF8.h
+++ b/libdevcore/UTF8.h
@@ -32,4 +32,10 @@ namespace dev
 /// @returns false if it is invalid and the first invalid position in invalidPosition
 bool validate(std::string const& _input, size_t& _invalidPosition);
 
+inline bool validate(std::string const& _input)
+{
+	size_t invalidPos;
+	return validate(_input, invalidPos);
+}
+
 }
diff --git a/libsolidity/ast/ASTJsonConverter.cpp b/libsolidity/ast/ASTJsonConverter.cpp
index 030b32bae..cf60c76a9 100644
--- a/libsolidity/ast/ASTJsonConverter.cpp
+++ b/libsolidity/ast/ASTJsonConverter.cpp
@@ -417,9 +417,8 @@ bool ASTJsonConverter::visit(ElementaryTypeNameExpression const& _node)
 bool ASTJsonConverter::visit(Literal const& _node)
 {
 	char const* tokenString = Token::toString(_node.token());
-	size_t invalidPos = 0;
 	Json::Value value{_node.value()};
-	if (!dev::validate(_node.value(), invalidPos))
+	if (!dev::validate(_node.value()))
 		value = Json::nullValue;
 	Token::Value subdenomination = Token::Value(_node.subDenomination());
 	addJsonNode(_node, "Literal", {
diff --git a/libsolidity/ast/Types.cpp b/libsolidity/ast/Types.cpp
index b22f3c086..4c8463b57 100644
--- a/libsolidity/ast/Types.cpp
+++ b/libsolidity/ast/Types.cpp
@@ -909,8 +909,7 @@ TypePointer StringLiteralType::mobileType() const
 
 bool StringLiteralType::isValidUTF8() const
 {
-	size_t dontCare {};
-	return dev::validate(m_value, dontCare);
+	return dev::validate(m_value);
 }
 
 shared_ptr<FixedBytesType> FixedBytesType::smallestTypeForLiteral(string const& _literal)