cerc-io/solidity
11
0
Fork 0
mirror of https://github.com/ethereum/solidity synced 2023-10-03 13:03:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #6317 from ethereum/byte_optimization_bugfix

Browse Source 
Fixes bug in byte optimization rule and adds tests.
This commit is contained in:
Alex Beregszaszi
2019-03-21 21:49:34 +00:00
committed by GitHub
parent 7d94d3af20 f7b5a27581
commit ed1ad2fc14
6 changed files with 60 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
test/libsolidity/SolidityEndToEndTest.cpp
+21
View File
@@ -10495,6 +10495,27 @@ BOOST_AUTO_TEST_CASE(fixed_bytes_length_access)
ABI_CHECK(callContractFunction("f(bytes32)", "789"), encodeArgs(u256(32), u256(16), u256(8)));
}
BOOST_AUTO_TEST_CASE(byte_optimization_bug)
{
char const* sourceCode = R"(
contract C {
function f(uint x) public returns (uint a) {
assembly {
a := byte(x, 31)
}
}
function g(uint x) public returns (uint a) {
assembly {
a := byte(31, x)
}
}
}
)";
compileAndRun(sourceCode, 0, "C");
ABI_CHECK(callContractFunction("f(uint256)", u256(2)), encodeArgs(u256(0)));
ABI_CHECK(callContractFunction("g(uint256)", u256(2)), encodeArgs(u256(2)));
}
BOOST_AUTO_TEST_CASE(inline_assembly_write_to_stack)
{
char const* sourceCode = R"(