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-rw-r--r--libsolidity/inlineasm/AsmParser.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/libsolidity/inlineasm/AsmParser.cpp b/libsolidity/inlineasm/AsmParser.cpp
index bed90139..7ddc6d04 100644
--- a/libsolidity/inlineasm/AsmParser.cpp
+++ b/libsolidity/inlineasm/AsmParser.cpp
@@ -71,6 +71,8 @@ assembly::Statement Parser::parseStatement()
expectToken(Token::Colon);
assignment.variableName.location = location();
assignment.variableName.name = m_scanner->currentLiteral();
+ if (instructions().count(assignment.variableName.name))
+ fatalParserError("Identifier expected.");
assignment.location.end = endPosition();
expectToken(Token::Identifier);
return assignment;