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| author | Federico Bond <federicobond@gmail.com> | 2017-06-22 22:14:14 +0800 |
|---|---|---|
| committer | Federico Bond <federicobond@gmail.com> | 2017-06-24 10:21:19 +0800 |
| commit | 7a3ea61ffd226cc09ef419c47c0506699aa69b50 (patch) | |
| tree | eb5aec7a7f92c2b1811fa9d552a6940fc2b12315 /libsolidity/analysis | |
| parent | 26ea9ce07cf85849cd881465a4322f14bff87eb8 (diff) | |
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Warn if decimal literals are used in a bytesXX context
Fixes #2349
Diffstat (limited to 'libsolidity/analysis')
| -rw-r--r-- | libsolidity/analysis/TypeChecker.cpp | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/libsolidity/analysis/TypeChecker.cpp b/libsolidity/analysis/TypeChecker.cpp index 2a8d1ff6..cb9435e8 100644 --- a/libsolidity/analysis/TypeChecker.cpp +++ b/libsolidity/analysis/TypeChecker.cpp @@ -22,6 +22,7 @@ #include <libsolidity/analysis/TypeChecker.h> #include <memory> +#include <boost/algorithm/string/predicate.hpp> #include <boost/range/adaptor/reversed.hpp> #include <libsolidity/ast/AST.h> #include <libsolidity/inlineasm/AsmAnalysis.h> @@ -1793,7 +1794,23 @@ void TypeChecker::expectType(Expression const& _expression, Type const& _expecte _expectedType.toString() + "." ); - } + } + + if ( + type(_expression)->category() == Type::Category::RationalNumber && + _expectedType.category() == Type::Category::FixedBytes + ) + { + auto literal = dynamic_cast<Literal const*>(&_expression); + + if (literal && !boost::starts_with(literal->value(), "0x")) + m_errorReporter.warning( + _expression.location(), + "Decimal literal assigned to bytesXX variable will be left-aligned. " + "Use an explicit conversion to silence this warning." + ); + } + } void TypeChecker::requireLValue(Expression const& _expression) |