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059171009b0138555f311cedc2553015ff618323 consensus/params: simplify ValidDeployment check to avoid gcc warning (Anthony Towns) Pull request description: Simplifies the ValidDeployment check to only check the upperbound, relying on the lower bound to be trivially true due to enum values starting at the minimum value of the underlying type (which is checked at compile time in deploymentstatus.cpp). Avoids a "comparison always true" warning in some versions of gcc. Fixes #22587 ACKs for top commit: MarcoFalke: review ACK 059171009b0138555f311cedc2553015ff618323 tryphe: retested ACK 059171009b0138555f311cedc2553015ff618323 Tree-SHA512: e53b5d478b46d35ec476d004e3c92803afb874c138dd6ef3848861f4281cc113fe88921bc4ac74fd4decbf318ed776d3f816c3a1185f99dc36a5cfecfff51f7c
35 lines
1.5 KiB
C++
35 lines
1.5 KiB
C++
// Copyright (c) 2020 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <deploymentstatus.h>
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#include <consensus/params.h>
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#include <versionbits.h>
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#include <type_traits>
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VersionBitsCache g_versionbitscache;
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/* Basic sanity checking for BuriedDeployment/DeploymentPos enums and
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* ValidDeployment check */
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static_assert(ValidDeployment(Consensus::DEPLOYMENT_TESTDUMMY), "sanity check of DeploymentPos failed (TESTDUMMY not valid)");
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static_assert(!ValidDeployment(Consensus::MAX_VERSION_BITS_DEPLOYMENTS), "sanity check of DeploymentPos failed (MAX value considered valid)");
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static_assert(!ValidDeployment(static_cast<Consensus::BuriedDeployment>(Consensus::DEPLOYMENT_TESTDUMMY)), "sanity check of BuriedDeployment failed (overlaps with DeploymentPos)");
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/* ValidDeployment only checks upper bounds for ensuring validity.
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* This checks that the lowest possible value or the type is also a
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* (specific) valid deployment so that lower bounds don't need to be checked.
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*/
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template<typename T, T x>
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static constexpr bool is_minimum()
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{
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using U = typename std::underlying_type<T>::type;
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return x == std::numeric_limits<U>::min();
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}
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static_assert(is_minimum<Consensus::BuriedDeployment, Consensus::DEPLOYMENT_HEIGHTINCB>(), "heightincb is not minimum value for BuriedDeployment");
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static_assert(is_minimum<Consensus::DeploymentPos, Consensus::DEPLOYMENT_TESTDUMMY>(), "testdummy is not minimum value for DeploymentPos");
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