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Fix assignment after tags in inline assembly

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This commit is contained in:
Alex Beregszaszi 2016-10-06 14:32:11 +01:00
parent d3f410d8a8
commit d0791fb365
3 changed files with 9 additions and 1 deletions
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1
Changelog.md
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@ -9,6 +9,7 @@ Features:
Bugfixes:
* Disallow unknown options in `solc`
* Inline assembly: support the `address` opcode
* Inline assembly: fix parsing of assignment after a label.
### 0.4.2 (2016-09-17)

4
libsolidity/inlineasm/AsmParser.cpp
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@ -95,7 +95,9 @@ assembly::Statement Parser::parseStatement()
fatalParserError("Label name / variable name must precede \":\".");
assembly::Identifier const& identifier = boost::get<assembly::Identifier>(statement);
m_scanner->next();
if (m_scanner->currentToken() == Token::Assign)
// identifier:=: should be parsed as identifier: =: (i.e. a label),
// while identifier:= (being followed by a non-colon) as identifier := (assignment).
if (m_scanner->currentToken() == Token::Assign && m_scanner->peekNextToken() != Token::Colon)
{
// functional assignment
FunctionalAssignment funAss = createWithLocation<FunctionalAssignment>(identifier.location);

5
test/libsolidity/InlineAssembly.cpp
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@ -157,6 +157,11 @@ BOOST_AUTO_TEST_CASE(oversize_string_literals)
BOOST_CHECK(!successAssemble("{ let x := \"123456789012345678901234567890123\" }"));
}
BOOST_AUTO_TEST_CASE(assignment_after_tag)
{
BOOST_CHECK(successParse("{ let x := 1 { tag: =: x } }"));
}
BOOST_AUTO_TEST_SUITE_END()
}