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author | Ryan Ofsky <ryan@ofsky.org> | 2022-09-15 11:15:06 -0400 |
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committer | Ryan Ofsky <ryan@ofsky.org> | 2024-04-25 16:08:24 -0400 |
commit | 834f65e82405bbed336f98996bc8cef366bbed0f (patch) | |
tree | 2ed28b93420df882aee09cd69464ce3775bfcebc /src/test | |
parent | 2eff198f4900c34442439ef2cbd9d82f4903f915 (diff) | |
download | bitcoin-834f65e82405bbed336f98996bc8cef366bbed0f.tar.xz |
refactor: Drop util::Result operator=
`util::Result` objects are aggregates that can hold multiple fields with
different information. Currently Result objects can only hold a success value
of an arbitrary type or a single bilingual_str error message. In followup PR
https://github.com/bitcoin/bitcoin/pull/25722, Result objects may be able to
hold both success and failure values of different types, plus error and warning
messages.
Having a Result::operator= assignment operator that completely erases all
existing Result information before assigning new information is potentially
dangerous in this case. For example, code that looks like it is assigning a
warning value could erase previously-assigned success or failure values.
Conversely, code that looks like it is just assigning a success or failure
value could erase previously assigned error and warning messages.
To prevent potential bugs like this, disable Result::operator= assignment
operator.
It is possible in the future we may want to re-enable operator= in limited
cases (such as when implicit conversions are not used) or add a Replace() or
Reset() method that mimicks default operator= behavior. Followup PR
https://github.com/bitcoin/bitcoin/pull/25722 also adds a Result::Update()
method providing another way to update an existing Result object.
Co-authored-by: stickies-v <stickies-v@protonmail.com>
Diffstat (limited to 'src/test')
-rw-r--r-- | src/test/mempool_tests.cpp | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/src/test/mempool_tests.cpp b/src/test/mempool_tests.cpp index 217e4a6d22..9f8d434213 100644 --- a/src/test/mempool_tests.cpp +++ b/src/test/mempool_tests.cpp @@ -202,9 +202,11 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest) tx7.vout[1].scriptPubKey = CScript() << OP_11 << OP_EQUAL; tx7.vout[1].nValue = 1 * COIN; - auto ancestors_calculated{pool.CalculateMemPoolAncestors(entry.Fee(2000000LL).FromTx(tx7), CTxMemPool::Limits::NoLimits())}; - BOOST_REQUIRE(ancestors_calculated.has_value()); - BOOST_CHECK(*ancestors_calculated == setAncestors); + { + auto ancestors_calculated{pool.CalculateMemPoolAncestors(entry.Fee(2000000LL).FromTx(tx7), CTxMemPool::Limits::NoLimits())}; + BOOST_REQUIRE(ancestors_calculated.has_value()); + BOOST_CHECK(*ancestors_calculated == setAncestors); + } pool.addUnchecked(entry.FromTx(tx7), setAncestors); BOOST_CHECK_EQUAL(pool.size(), 7U); @@ -260,9 +262,11 @@ BOOST_AUTO_TEST_CASE(MempoolIndexingTest) tx10.vout[0].scriptPubKey = CScript() << OP_11 << OP_EQUAL; tx10.vout[0].nValue = 10 * COIN; - ancestors_calculated = pool.CalculateMemPoolAncestors(entry.Fee(200000LL).Time(NodeSeconds{4s}).FromTx(tx10), CTxMemPool::Limits::NoLimits()); - BOOST_REQUIRE(ancestors_calculated); - BOOST_CHECK(*ancestors_calculated == setAncestors); + { + auto ancestors_calculated{pool.CalculateMemPoolAncestors(entry.Fee(200000LL).Time(NodeSeconds{4s}).FromTx(tx10), CTxMemPool::Limits::NoLimits())}; + BOOST_REQUIRE(ancestors_calculated); + BOOST_CHECK(*ancestors_calculated == setAncestors); + } pool.addUnchecked(entry.FromTx(tx10), setAncestors); |