From 1b1f35762e7d761a6a97f825699972472ba44888 Mon Sep 17 00:00:00 2001
From: chriseth <chris@ethereum.org>
Date: Tue, 13 Jun 2017 18:38:55 +0200
Subject: Enforce function arguments when parsing functional instructions.

---
 libsolidity/inlineasm/AsmParser.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'libsolidity/inlineasm')

diff --git a/libsolidity/inlineasm/AsmParser.cpp b/libsolidity/inlineasm/AsmParser.cpp
index 68a9cb03..f9b073ba 100644
--- a/libsolidity/inlineasm/AsmParser.cpp
+++ b/libsolidity/inlineasm/AsmParser.cpp
@@ -174,6 +174,19 @@ assembly::Case Parser::parseCase()
 assembly::Statement Parser::parseExpression()
 {
 	Statement operation = parseElementaryOperation(true);
+	if (operation.type() == typeid(Instruction))
+	{
+		Instruction const& instr = boost::get<Instruction>(operation);
+		int args = instructionInfo(instr.instruction).args;
+		if (args > 0 && currentToken() != Token::LParen)
+			fatalParserError(string(
+				"Expected token \"(\" (\"" +
+				instructionNames().at(instr.instruction) +
+				"\" expects " +
+				boost::lexical_cast<string>(args) +
+				" arguments)"
+			));
+	}
 	if (currentToken() == Token::LParen)
 		return parseCall(std::move(operation));
 	else
-- 
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