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Merge pull request #3605 from ethereum/deprecate-throw

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Turn throw into a syntax error for 0.5.0
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chriseth 2018-02-27 10:22:17 +01:00 committed by GitHub
commit 415ac2ae87
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3 changed files with 23 additions and 5 deletions
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1
Changelog.md
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@ -6,6 +6,7 @@ Features:
* Type Checker: Disallow uninitialized storage pointers as experimental 0.5.0 feature. * Type Checker: Disallow uninitialized storage pointers as experimental 0.5.0 feature.
* Support and recommend using ``emit EventName();`` to call events explicitly. * Support and recommend using ``emit EventName();`` to call events explicitly.
* Syntax Analyser: Do not warn about experimental features if they do not concern code generation. * Syntax Analyser: Do not warn about experimental features if they do not concern code generation.
* Syntax Checker: Mark ``throw`` as an error as experimental 0.5.0 feature.
Bugfixes: Bugfixes:
* Assembly: Raise error on oversized number literals in assembly. * Assembly: Raise error on oversized number literals in assembly.

8
libsolidity/analysis/SyntaxChecker.cpp
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@ -174,6 +174,14 @@ bool SyntaxChecker::visit(Break const& _breakStatement)
bool SyntaxChecker::visit(Throw const& _throwStatement) bool SyntaxChecker::visit(Throw const& _throwStatement)
{ {
bool const v050 = m_sourceUnit->annotation().experimentalFeatures.count(ExperimentalFeature::V050);
if (v050)
m_errorReporter.syntaxError(
_throwStatement.location(),
"\"throw\" is deprecated in favour of \"revert()\", \"require()\" and \"assert()\"."
);
else
m_errorReporter.warning( m_errorReporter.warning(
_throwStatement.location(), _throwStatement.location(),
"\"throw\" is deprecated in favour of \"revert()\", \"require()\" and \"assert()\"." "\"throw\" is deprecated in favour of \"revert()\", \"require()\" and \"assert()\"."

11
test/libsolidity/SolidityNameAndTypeResolution.cpp
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@ -6332,7 +6332,16 @@ BOOST_AUTO_TEST_CASE(warn_about_throw)
} }
} }
)"; )";
CHECK_WARNING(text, "\"throw\" is deprecated"); CHECK_WARNING(text, "\"throw\" is deprecated in favour of \"revert()\", \"require()\" and \"assert()\"");
text = R"(
pragma experimental "v0.5.0";
contract C {
function f() pure public {
throw;
}
}
)";
CHECK_ERROR(text, SyntaxError, "\"throw\" is deprecated in favour of \"revert()\", \"require()\" and \"assert()\"");
} }
BOOST_AUTO_TEST_CASE(bare_revert) BOOST_AUTO_TEST_CASE(bare_revert)