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Storage access from inline assembly.

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This commit is contained in:
chriseth
2017-04-25 16:49:04 +02:00
parent 5f4b68e211
commit 478f2997ea
5 changed files with 108 additions and 20 deletions
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test/libsolidity/SolidityEndToEndTest.cpp
+33 -3
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@@ -7427,10 +7427,38 @@ BOOST_AUTO_TEST_CASE(inline_assembly_storage_access)
uint16 public y;
uint public z;
function f() returns (bool) {
uint off1;
uint off2;
assembly {
sstore(z_slot, 7)
off1 := z_offset
off2 := y_offset
}
assert(off1 == 0);
assert(off2 == 2);
return true;
}
}
)";
compileAndRun(sourceCode, 0, "C");
BOOST_CHECK(callContractFunction("f()") == encodeArgs(true));
BOOST_CHECK(callContractFunction("z()") == encodeArgs(u256(7)));
}
BOOST_AUTO_TEST_CASE(inline_assembly_storage_access_via_pointer)
{
char const* sourceCode = R"(
contract C {
struct Data { uint contents; }
uint public separator;
Data public a;
uint public separator2;
function f() returns (bool) {
Data x = a;
uint off;
assembly {
sstore(z$slot, 7)
off := z$offset
sstore(x_slot, 7)
off := x_offset
}
assert(off == 0);
return true;
@@ -7439,7 +7467,9 @@ BOOST_AUTO_TEST_CASE(inline_assembly_storage_access)
)";
compileAndRun(sourceCode, 0, "C");
BOOST_CHECK(callContractFunction("f()") == encodeArgs(true));
BOOST_CHECK(callContractFunction("z()") == encodeArgs(u256(7)));
BOOST_CHECK(callContractFunction("a()") == encodeArgs(u256(7)));
BOOST_CHECK(callContractFunction("separator()") == encodeArgs(u256(0)));
BOOST_CHECK(callContractFunction("separator2()") == encodeArgs(u256(0)));
}
BOOST_AUTO_TEST_CASE(inline_assembly_jumps)