diff options
-rw-r--r-- | src/policy/feerate.cpp | 6 | ||||
-rw-r--r-- | src/policy/feerate.h | 1 | ||||
-rw-r--r-- | src/test/amount_tests.cpp | 10 | ||||
-rw-r--r-- | src/test/transaction_tests.cpp | 4 | ||||
-rwxr-xr-x | test/functional/wallet_keypool.py | 2 |
5 files changed, 14 insertions, 9 deletions
diff --git a/src/policy/feerate.cpp b/src/policy/feerate.cpp index 25b9282b4e..ce149067b7 100644 --- a/src/policy/feerate.cpp +++ b/src/policy/feerate.cpp @@ -7,6 +7,8 @@ #include <tinyformat.h> +#include <cmath> + CFeeRate::CFeeRate(const CAmount& nFeePaid, uint32_t num_bytes) { const int64_t nSize{num_bytes}; @@ -22,7 +24,9 @@ CAmount CFeeRate::GetFee(uint32_t num_bytes) const { const int64_t nSize{num_bytes}; - CAmount nFee = nSatoshisPerK * nSize / 1000; + // Be explicit that we're converting from a double to int64_t (CAmount) here. + // We've previously had issues with the silent double->int64_t conversion. + CAmount nFee{static_cast<CAmount>(std::ceil(nSatoshisPerK * nSize / 1000.0))}; if (nFee == 0 && nSize != 0) { if (nSatoshisPerK > 0) nFee = CAmount(1); diff --git a/src/policy/feerate.h b/src/policy/feerate.h index b16f3f8251..8ba896bb01 100644 --- a/src/policy/feerate.h +++ b/src/policy/feerate.h @@ -48,6 +48,7 @@ public: CFeeRate(const CAmount& nFeePaid, uint32_t num_bytes); /** * Return the fee in satoshis for the given size in bytes. + * If the calculated fee would have fractional satoshis, then the returned fee will always be rounded up to the nearest satoshi. */ CAmount GetFee(uint32_t num_bytes) const; /** diff --git a/src/test/amount_tests.cpp b/src/test/amount_tests.cpp index 114fe3907c..aa23d71671 100644 --- a/src/test/amount_tests.cpp +++ b/src/test/amount_tests.cpp @@ -48,13 +48,13 @@ BOOST_AUTO_TEST_CASE(GetFeeTest) BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), CAmount(-9e3)); feeRate = CFeeRate(123); - // Truncates the result, if not integer + // Rounds up the result, if not integer BOOST_CHECK_EQUAL(feeRate.GetFee(0), CAmount(0)); BOOST_CHECK_EQUAL(feeRate.GetFee(8), CAmount(1)); // Special case: returns 1 instead of 0 - BOOST_CHECK_EQUAL(feeRate.GetFee(9), CAmount(1)); - BOOST_CHECK_EQUAL(feeRate.GetFee(121), CAmount(14)); - BOOST_CHECK_EQUAL(feeRate.GetFee(122), CAmount(15)); - BOOST_CHECK_EQUAL(feeRate.GetFee(999), CAmount(122)); + BOOST_CHECK_EQUAL(feeRate.GetFee(9), CAmount(2)); + BOOST_CHECK_EQUAL(feeRate.GetFee(121), CAmount(15)); + BOOST_CHECK_EQUAL(feeRate.GetFee(122), CAmount(16)); + BOOST_CHECK_EQUAL(feeRate.GetFee(999), CAmount(123)); BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), CAmount(123)); BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), CAmount(1107)); diff --git a/src/test/transaction_tests.cpp b/src/test/transaction_tests.cpp index c813fbea32..252a85c282 100644 --- a/src/test/transaction_tests.cpp +++ b/src/test/transaction_tests.cpp @@ -810,10 +810,10 @@ BOOST_AUTO_TEST_CASE(test_IsStandard) // nDustThreshold = 182 * 3702 / 1000 dustRelayFee = CFeeRate(3702); // dust: - t.vout[0].nValue = 673 - 1; + t.vout[0].nValue = 674 - 1; CheckIsNotStandard(t, "dust"); // not dust: - t.vout[0].nValue = 673; + t.vout[0].nValue = 674; CheckIsStandard(t); dustRelayFee = CFeeRate(DUST_RELAY_TX_FEE); diff --git a/test/functional/wallet_keypool.py b/test/functional/wallet_keypool.py index c714993234..ada97417e4 100755 --- a/test/functional/wallet_keypool.py +++ b/test/functional/wallet_keypool.py @@ -179,7 +179,7 @@ class KeyPoolTest(BitcoinTestFramework): assert_equal("psbt" in res, True) # create a transaction without change at the maximum fee rate, such that the output is still spendable: - res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00010000}], options={"subtractFeeFromOutputs": [0], "feeRate": 0.0008824}) + res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00010000}], options={"subtractFeeFromOutputs": [0], "feeRate": 0.0008823}) assert_equal("psbt" in res, True) assert_equal(res["fee"], Decimal("0.00009706")) |