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Only allow compile-time constants for constant state variables.

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This commit is contained in:
chriseth 2018-07-03 23:03:26 +02:00
parent 533d5d4b1c
commit 8ed3da1d5f
4 changed files with 7 additions and 15 deletions
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1
Changelog.md
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@ -28,6 +28,7 @@ Breaking Changes:
* Optimizer: Remove the no-op ``PUSH1 0 NOT AND`` sequence.
* Parser: Disallow trailing dots that are not followed by a number.
* Parser: Remove ``constant`` as function state mutability modifer.
* Type Checker: Disallow values for constants that are not compile-time constants. This was already the case in the experimental 0.5.0 mode.
* Type Checker: Disallow arithmetic operations for boolean variables.
* Type Checker: Disallow conversions between ``bytesX`` and ``uintY`` of different size.
* Type Checker: Disallow specifying base constructor arguments multiple times in the same inheritance hierarchy. This was already the case in the experimental 0.5.0 mode.

17
libsolidity/analysis/TypeChecker.cpp
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@ -749,19 +749,10 @@ bool TypeChecker::visit(VariableDeclaration const& _variable)
if (!_variable.value())
m_errorReporter.typeError(_variable.location(), "Uninitialized \"constant\" variable.");
else if (!_variable.value()->annotation().isPure)
{
if (_variable.sourceUnit().annotation().experimentalFeatures.count(ExperimentalFeature::V050))
m_errorReporter.typeError(
_variable.value()->location(),
"Initial value for constant variable has to be compile-time constant."
);
else
m_errorReporter.warning(
_variable.value()->location(),
"Initial value for constant variable has to be compile-time constant. "
"This will fail to compile with the next breaking version change."
);
}
m_errorReporter.typeError(
_variable.value()->location(),
"Initial value for constant variable has to be compile-time constant."
);
}
if (!_variable.isStateVariable())
{

2
test/libsolidity/syntaxTests/constants/assign_constant_function_value.sol
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@ -3,4 +3,4 @@ contract C {
uint constant y = x();
}
// ----
// Warning: (74-77): Initial value for constant variable has to be compile-time constant. This will fail to compile with the next breaking version change.
// TypeError: (74-77): Initial value for constant variable has to be compile-time constant.

2
test/libsolidity/syntaxTests/nameAndTypeResolution/165_assigning_state_to_const_variable.sol
View File

@ -2,4 +2,4 @@ contract C {
address constant x = msg.sender;
}
// ----
// Warning: (38-48): Initial value for constant variable has to be compile-time constant. This will fail to compile with the next breaking version change.
// TypeError: (38-48): Initial value for constant variable has to be compile-time constant.