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Merge remote-tracking branch 'origin/develop' into breaking

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This commit is contained in:
chriseth 2020-11-10 17:28:36 +01:00
commit 141277dadf
19 changed files with 170 additions and 92 deletions
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3
Changelog.md
View File

@ -28,8 +28,11 @@ AST Changes:
Language Features:
* Ability to select the abi coder using ``pragma abicoder v1`` and ``pragma abicoder v2``.
* Immutable variables with literal number values are considered pure.
Compiler Features:
* Command Line Interface: Report error if file could not be read in ``--standard-json`` mode.
* Command Line interface: Report proper error for each output file which could not be written. Previously an exception was thrown, and execution aborted, on the first error.
* SMTChecker: Add division by zero checks in the CHC engine.
* SMTChecker: Support ``selector`` for expressions with value known at compile-time.
* Command Line Interface: New option ``--model-checker-timeout`` sets a timeout in milliseconds for each individual query performed by the SMTChecker.

8
libsolidity/analysis/ViewPureChecker.cpp
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@ -186,7 +186,13 @@ void ViewPureChecker::endVisit(Identifier const& _identifier)
bool writes = _identifier.annotation().willBeWrittenTo;
if (VariableDeclaration const* varDecl = dynamic_cast<VariableDeclaration const*>(declaration))
{
if (varDecl->isStateVariable() && !varDecl->isConstant())
if (varDecl->immutable())
{
// Immutables that are assigned literals are pure.
if (!(varDecl->value() && varDecl->value()->annotation().type->category() == Type::Category::RationalNumber))
mutability = StateMutability::View;
}
else if (varDecl->isStateVariable() && !varDecl->isConstant())
mutability = writes ? StateMutability::NonPayable : StateMutability::View;
}
else if (MagicVariableDeclaration const* magicVar = dynamic_cast<MagicVariableDeclaration const*>(declaration))

135
libsolidity/codegen/YulUtilFunctions.cpp
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@ -2808,8 +2808,7 @@ string YulUtilFunctions::conversionFunction(Type const& _from, Type const& _to)
.render();
});
}
if (_from.category() == Type::Category::ArraySlice)
else if (_from.category() == Type::Category::ArraySlice)
{
solAssert(_from.isDynamicallySized(), "");
solAssert(_from.dataStoredIn(DataLocation::CallData), "");
@ -2840,6 +2839,14 @@ string YulUtilFunctions::conversionFunction(Type const& _from, Type const& _to)
.render();
});
}
else if (_from.category() == Type::Category::Array)
{
solAssert(_to.category() == Type::Category::Array, "");
return arrayConversionFunction(
dynamic_cast<ArrayType const&>(_from),
dynamic_cast<ArrayType const&>(_to)
);
}
if (_from.sizeOnStack() != 1 || _to.sizeOnStack() != 1)
return conversionFunctionSpecial(_from, _to);
@ -2946,42 +2953,6 @@ string YulUtilFunctions::conversionFunction(Type const& _from, Type const& _to)
case Type::Category::FixedPoint:
solUnimplemented("Fixed point types not implemented.");
break;
case Type::Category::Array:
{
if (_from == _to)
body = "converted := value";
else
{
ArrayType const& from = dynamic_cast<decltype(from)>(_from);
ArrayType const& to = dynamic_cast<decltype(to)>(_to);
switch (to.location())
{
case DataLocation::Storage:
// Other cases are done explicitly in LValue::storeValue, and only possible by assignment.
solAssert(
(to.isPointer() || (from.isByteArray() && to.isByteArray())) &&
from.location() == DataLocation::Storage,
"Invalid conversion to storage type."
);
body = "converted := value";
break;
case DataLocation::Memory:
// Copy the array to a free position in memory, unless it is already in memory.
if (from.location() == DataLocation::Memory)
body = "converted := value";
else if (from.location() == DataLocation::CallData)
solUnimplemented("Conversion of calldata types not yet implemented.");
else
body = "converted := " + copyArrayFromStorageToMemoryFunction(from, to) + "(value)";
break;
case DataLocation::CallData:
solUnimplemented("Conversion of calldata types not yet implemented.");
break;
}
}
break;
}
case Type::Category::Struct:
{
solAssert(toCategory == Type::Category::Struct, "");
@ -3074,6 +3045,71 @@ string YulUtilFunctions::conversionFunction(Type const& _from, Type const& _to)
});
}
string YulUtilFunctions::arrayConversionFunction(ArrayType const& _from, ArrayType const& _to)
{
solUnimplementedAssert(_to.location() != DataLocation::CallData, "Conversion of calldata types not yet implemented.");
// Other cases are done explicitly in LValue::storeValue, and only possible by assignment.
if (_to.location() == DataLocation::Storage)
solAssert(
(_to.isPointer() || (_from.isByteArray() && _to.isByteArray())) &&
_from.location() == DataLocation::Storage,
"Invalid conversion to storage type."
);
if (_to.location() == DataLocation::Memory && _from.location() == DataLocation::CallData)
{
solUnimplementedAssert(_from.isDynamicallySized(), "");
solUnimplementedAssert(!_from.baseType()->isDynamicallyEncoded(), "");
solUnimplementedAssert(_from.isByteArray() && _to.isByteArray() && _to.isDynamicallySized(), "");
}
string functionName =
"convert_array_" +
_from.identifier() +
"_to_" +
_to.identifier();
return m_functionCollector.createFunction(functionName, [&]() {
Whiskers templ(R"(
function <functionName>(value<?fromCalldataDynamic>, length</fromCalldataDynamic>) -> converted {
<body>
}
)");
templ("functionName", functionName);
templ("fromCalldataDynamic", _from.dataStoredIn(DataLocation::CallData) && _from.isDynamicallySized());
if (
_from == _to ||
(_from.dataStoredIn(DataLocation::Memory) && _to.dataStoredIn(DataLocation::Memory)) ||
_to.dataStoredIn(DataLocation::Storage)
)
templ("body", "converted := value");
else if (_to.dataStoredIn(DataLocation::Memory))
templ(
"body",
Whiskers(R"(
// Copy the array to a free position in memory
<?fromStorage>
converted := <arrayStorageToMem>(value)
</fromStorage>
<?fromCalldata>
converted := <allocateMemoryArray>(length)
<copyToMemory>(value, add(converted, 0x20), length)
</fromCalldata>
)")
("fromStorage", _from.dataStoredIn(DataLocation::Storage))
("fromCalldata", _from.dataStoredIn(DataLocation::CallData))
("allocateMemoryArray", _from.dataStoredIn(DataLocation::CallData) ? allocateMemoryArrayFunction(_to) : "")
("copyToMemory", _from.dataStoredIn(DataLocation::CallData) ? copyToMemoryFunction(true) : "")
("arrayStorageToMem", _from.dataStoredIn(DataLocation::Storage) ? copyArrayFromStorageToMemoryFunction(_from, _to) : "")
.render()
);
else
solAssert(false, "");
return templ.render();
});
}
string YulUtilFunctions::cleanupFunction(Type const& _type)
{
string functionName = string("cleanup_") + _type.identifier();
@ -3564,29 +3600,6 @@ string YulUtilFunctions::conversionFunctionSpecial(Type const& _from, Type const
.render();
}
if (_from.category() == Type::Category::Array && _to.category() == Type::Category::Array)
{
auto const& fromArrayType = dynamic_cast<ArrayType const&>(_from);
auto const& toArrayType = dynamic_cast<ArrayType const&>(_to);
solAssert(!fromArrayType.baseType()->isDynamicallyEncoded(), "");
solUnimplementedAssert(fromArrayType.isByteArray() && toArrayType.isByteArray(), "");
solUnimplementedAssert(toArrayType.location() == DataLocation::Memory, "");
solUnimplementedAssert(fromArrayType.location() == DataLocation::CallData, "");
solUnimplementedAssert(toArrayType.isDynamicallySized(), "");
Whiskers templ(R"(
function <functionName>(offset, length) -> converted {
converted := <allocateMemoryArray>(length)
<copyToMemory>(offset, add(converted, 0x20), length)
}
)");
templ("functionName", functionName);
templ("allocateMemoryArray", allocateMemoryArrayFunction(toArrayType));
templ("copyToMemory", copyToMemoryFunction(fromArrayType.location() == DataLocation::CallData));
return templ.render();
}
solUnimplementedAssert(
_from.category() == Type::Category::StringLiteral,
"Type conversion " + _from.toString() + " -> " + _to.toString() + " not yet implemented."

3
libsolidity/codegen/YulUtilFunctions.h
View File

@ -440,6 +440,9 @@ public:
);
private:
/// Special case of conversion functions - handles all array conversions.
std::string arrayConversionFunction(ArrayType const& _from, ArrayType const& _to);
/// Special case of conversionFunction - handles everything that does not
/// use exactly one variable to hold the value.
std::string conversionFunctionSpecial(Type const& _from, Type const& _to);

3
libsolutil/CommonIO.cpp
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@ -47,8 +47,7 @@ inline T readFile(std::string const& _file)
T ret;
size_t const c_elementSize = sizeof(typename T::value_type);
std::ifstream is(_file, std::ifstream::binary);
if (!is)
return ret;
assertThrow(is, FileNotFound, _file);
// get length of file:
is.seekg(0, is.end);

3
libsolutil/CommonIO.h
View File

@ -32,7 +32,8 @@ namespace solidity::util
{
/// Retrieve and returns the contents of the given file as a std::string.
/// If the file doesn't exist or isn't readable, returns an empty container / bytes.
/// If the file doesn't exist, it will throw a FileNotFound exception.
/// If the file is empty, returns an empty string.
std::string readFileAsString(std::string const& _file);
/// Retrieve and returns the contents of standard input (until EOF).

2
libsolutil/Exceptions.h
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@ -48,7 +48,7 @@ private:
DEV_SIMPLE_EXCEPTION(InvalidAddress);
DEV_SIMPLE_EXCEPTION(BadHexCharacter);
DEV_SIMPLE_EXCEPTION(BadHexCase);
DEV_SIMPLE_EXCEPTION(FileError);
DEV_SIMPLE_EXCEPTION(FileNotFound);
DEV_SIMPLE_EXCEPTION(DataTooLong);
DEV_SIMPLE_EXCEPTION(StringTooLong);

22
solc/CommandLineInterface.cpp
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@ -614,6 +614,7 @@ bool CommandLineInterface::readInputFilesAndConfigureRemappings()
continue;
}
// NOTE: we ignore the FileNotFound exception as we manually check above
m_sourceCodes[infile.generic_string()] = readFileAsString(infile.string());
path = boost::filesystem::canonical(infile).string();
}
@ -643,6 +644,10 @@ bool CommandLineInterface::parseLibraryOption(string const& _input)
{
// Thrown e.g. if path is too long.
}
catch (FileNotFound const&)
{
// Should not happen if `fs::is_regular_file` is correct.
}
vector<string> libraries;
boost::split(libraries, data, boost::is_space() || boost::is_any_of(","), boost::token_compress_on);
@ -738,7 +743,11 @@ void CommandLineInterface::createFile(string const& _fileName, string const& _da
ofstream outFile(pathName);
outFile << _data;
if (!outFile)
BOOST_THROW_EXCEPTION(FileError() << errinfo_comment("Could not write to file: " + pathName));
{
serr() << "Could not write to file \"" << pathName << "\"." << endl;
m_error = true;
return;
}
}
void CommandLineInterface::createJson(string const& _fileName, string const& _json)
@ -1146,6 +1155,7 @@ bool CommandLineInterface::processInput()
if (!boost::filesystem::is_regular_file(canonicalPath))
return ReadCallback::Result{false, "Not a valid file."};
// NOTE: we ignore the FileNotFound exception as we manually check above
auto contents = readFileAsString(canonicalPath.string());
m_sourceCodes[path.generic_string()] = contents;
return ReadCallback::Result{true, contents};
@ -1232,7 +1242,17 @@ bool CommandLineInterface::processInput()
if (jsonFile.empty())
input = readStandardInput();
else
{
try
{
input = readFileAsString(jsonFile);
}
catch (FileNotFound const&)
{
serr() << "File not found: " << jsonFile << endl;
return false;
}
}
StandardCompiler compiler(fileReader);
sout() << compiler.compile(std::move(input)) << endl;
return true;

40
test/cmdlineTests.sh
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@ -254,26 +254,37 @@ printTask "Running general commandline tests..."
cd "$REPO_ROOT"/test/cmdlineTests/
for tdir in */
do
if [ -e "${tdir}/input.json" ]
printTask " - ${tdir}"
# Strip trailing slash from $tdir. `find` on MacOS X won't strip it and will produce double slashes.
tdir=$(basename "${tdir}")
inputFiles="$(find "${tdir}" -name 'input.*' -type f -exec printf "%s\n" "{}" \;)"
inputCount="$(echo "${inputFiles}" | wc -l)"
if (( ${inputCount} == 0 ))
then
printError "No input files found."
exit 1
fi
if (( ${inputCount} > 1 ))
then
printError "Ambiguous input. Found input files in multiple formats:"
echo -e "${inputFiles}"
exit 1
fi
# Use printf to get rid of the trailing newline
inputFile=$(printf "%s" "${inputFiles}")
if [ "${inputFile}" = "${tdir}/input.json" ]
then
stdin="${inputFile}"
inputFile=""
stdin="${tdir}/input.json"
stdout="$(cat ${tdir}/output.json 2>/dev/null || true)"
stdoutExpectationFile="${tdir}/output.json"
args="--standard-json "$(cat ${tdir}/args 2>/dev/null || true)
else
if [[ -e "${tdir}input.yul" && -e "${tdir}input.sol" ]]
then
printError "Ambiguous input. Found both input.sol and input.yul."
exit 1
fi
if [ -e "${tdir}input.yul" ]
then
inputFile="${tdir}input.yul"
else
inputFile="${tdir}input.sol"
fi
stdin=""
stdout="$(cat ${tdir}/output 2>/dev/null || true)"
stdoutExpectationFile="${tdir}/output"
@ -282,7 +293,6 @@ printTask "Running general commandline tests..."
exitCode=$(cat ${tdir}/exit 2>/dev/null || true)
err="$(cat ${tdir}/err 2>/dev/null || true)"
stderrExpectationFile="${tdir}/err"
printTask " - ${tdir}"
test_solc_behaviour "$inputFile" \
"$args" \
"$stdin" \

1
test/cmdlineTests/standard_file_not_found/args Normal file
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@ -0,0 +1 @@
--standard-json

1
test/cmdlineTests/standard_file_not_found/err Normal file
View File

@ -0,0 +1 @@
File not found: standard_file_not_found/input.sol

1
test/cmdlineTests/standard_file_not_found/exit Normal file
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@ -0,0 +1 @@
1

2
test/cmdlineTests/standard_immutable_references/input.json
View File

@ -2,7 +2,7 @@
"language": "Solidity",
"sources": {
"a.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\ncontract A { uint256 immutable x = 1; function f() public view returns (uint256) { return x; } }"
"content": "// SPDX-License-Identifier: GPL-3.0\ncontract A { uint256 immutable x = 1 + 3; function f() public pure returns (uint256) { return x; } }"
}
},
"settings": {

2
test/cmdlineTests/standard_immutable_references/output.json
View File

@ -1,2 +1,2 @@
{"contracts":{"a.sol":{"A":{"evm":{"deployedBytecode":{"generatedSources":[],"immutableReferences":{"3":[{"length":32,"start":77}]},"linkReferences":{},"object":"<BYTECODE REMOVED>","opcodes":"<OPCODES REMOVED>","sourceMap":"36:96:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;74:56;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;108:7;126:1;119:8;;74:56;:::o"}}}}},"errors":[{"component":"general","errorCode":"3420","formattedMessage":"a.sol: Warning: Source file does not specify required compiler version!
{"contracts":{"a.sol":{"A":{"evm":{"deployedBytecode":{"generatedSources":[],"immutableReferences":{"5":[{"length":32,"start":77}]},"linkReferences":{},"object":"<BYTECODE REMOVED>","opcodes":"<OPCODES REMOVED>","sourceMap":"36:100:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;78:56;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;112:7;130:1;123:8;;78:56;:::o"}}}}},"errors":[{"component":"general","errorCode":"3420","formattedMessage":"a.sol: Warning: Source file does not specify required compiler version!
","message":"Source file does not specify required compiler version!","severity":"warning","sourceLocation":{"end":-1,"file":"a.sol","start":-1},"type":"Warning"}],"sources":{"a.sol":{"id":0}}}

2
test/libsolidity/semanticTests/structs/calldata/calldata_struct_with_nested_array_to_storage.sol
View File

@ -15,6 +15,6 @@ contract C {
}
}
// ====
// compileViaYul: true
// compileViaYul: also
// ----
// f(uint32, (uint128, uint256[][2], uint32)): 55, 0x40, 77, 0x60, 88, 0x40, 0x40, 2, 1, 2 -> 55, 77, 1, 2, 88

2
test/libsolidity/syntaxTests/immutable/unrelated_reading.sol
View File

@ -1,7 +1,7 @@
contract C {
uint immutable x = 1;
function readX() internal view returns(uint) {
function readX() internal pure returns(uint) {
return x + 3;
}
}

1
test/libsolidity/syntaxTests/viewPureChecker/immutable.sol
View File

@ -5,4 +5,3 @@ contract B {
}
}
// ----
// TypeError 2527: (100-101): Function declared as pure, but this expression (potentially) reads from the environment or state and thus requires "view".

13
test/tools/yulopti.cpp
View File

@ -20,6 +20,7 @@
*/
#include <libsolutil/CommonIO.h>
#include <libsolutil/Exceptions.h>
#include <liblangutil/ErrorReporter.h>
#include <liblangutil/Scanner.h>
#include <libyul/AsmAnalysis.h>
@ -243,8 +244,18 @@ Allowed options)",
}
string input;
try
{
input = readFileAsString(arguments["input-file"].as<string>());
}
catch (FileNotFound const& _exception)
{
cerr << "File not found:" << _exception.comment() << endl;
return 1;
}
if (arguments.count("input-file"))
YulOpti{}.runInteractive(readFileAsString(arguments["input-file"].as<string>()));
YulOpti{}.runInteractive(input);
else
cout << options;

12
test/tools/yulrun.cpp
View File

@ -35,6 +35,7 @@
#include <libsolutil/CommonIO.h>
#include <libsolutil/CommonData.h>
#include <libsolutil/Exceptions.h>
#include <boost/program_options.hpp>
@ -137,10 +138,19 @@ Allowed options)",
else
{
string input;
if (arguments.count("input-file"))
for (string path: arguments["input-file"].as<vector<string>>())
{
try
{
input += readFileAsString(path);
}
catch (FileNotFound const&)
{
cerr << "File not found: " << path << endl;
return 1;
}
}
else
input = readStandardInput();