Remove redundant explicitly defined copy ctors #11161
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Remove periods from PR title and commit message. Otherwise trivial ACK 8a14a86. |
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@promag Done |
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Please rebase (remove merge commit). |
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@promag Done |
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utACK f92b20a85e37b2ce91cc48fa9d7a1f29e353ff13 |
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Please squash your commits according to https://github.com/bitcoin/bitcoin/blob/master/CONTRIBUTING.md#squashing-commits. No need for two commits on a 8-line-changed patch doing the same thing. |
CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). CFeeRate has an explicitly defined copy ctor which has the same functionality as the implicit default copy ctor which would h ave been generated otherwise.
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@MarcoFalke Done |
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utACK b426e24 |
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b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
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b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
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Sep 23, 2019
b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
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Sep 24, 2019
b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
PastaPastaPasta
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Nov 19, 2019
b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
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Nov 21, 2019
b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
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b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
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Jan 1, 2020
b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
PastaPastaPasta
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Jan 2, 2020
b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
PastaPastaPasta
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Jan 2, 2020
b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
furszy
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Jan 21, 2021
ae41ebe Remove redundant explicitly defined copy ctors (Dan Raviv) 454aa37 Trivial: explicit (default) copy-constructor for CTransaction (random-zebra) 2af2306 Cleanup: Remove redundant copy-constructor for CSignedMessage (random-zebra) e28259d Masternode: proper copy-assignment for CMasternode/CmasternodePing (random-zebra) Pull request description: Fix the `-Wdeprecated-copy` warnings listed in #2076 **Background** While perfectly valid in C++98, implicit generation of the copy constructor is declared as deprecated in C++11, when there is already a user-defined copy assignment operator, or vice-versa. The rationale behind this is the "rule of three" (https://en.cppreference.com/w/cpp/language/rule_of_three) > If a class requires a user-defined destructor, a user-defined copy constructor, or a user-defined copy assignment operator, it almost certainly requires all three. **Issue - Fix** We have several places that define redundant copy assignment operators (and then use the implicit copy constructor), or that do need non-default ctors/dtors but don't define copy assignment. (See also bitcoin#11161, which is also cherry-picked here) Specifically: - `CSignedMessage`/`CMasternodePing`/`CMasternode` use a weird copy-assignment that *swaps* with the argument (which, of course, cannot be "const" then). Here we remove all ::swap implementations, and provide actual copy assignment operators. - `CTransaction` has an explicit copy-assignment operator, but uses the implicit copy-ctor in `CMerkleTx` constructor. - `CFeeRate` and `CTxMemPoolEntry` have explicitly defined copy ctor, which can (and should, for the rule-of-three) be replaced by the default one (bitcoin#11161). **Note** Reason why these warnings pop up just now. Since Clang 10.0 and GCC 9.3, `-Wextra` enables `-Wdeprecated-copy` by default, and that is very spammy, especially when compiling with the QT GUI (bitcoin#15822 / bitcoin#18419). It is so spammy (also with `boost-1.72.0`) that Bitcoin decided to temporarily suppress this warning (bitcoin#18738) until QT fixes it upstream, and boost is definitely removed in 0.22 (bitcoin#18967) ACKs for top commit: furszy: utACK ae41ebe Tree-SHA512: 1f59f9f7426abbf4b7d4bb0d1ac50491eb52f776e2a018de3acc8ab381af3b69db6b9a5b60c04b48f0d495e560eaa1e3d19be03d133f230daca66ba66e766289
gades
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Jun 24, 2021
b426e24 Remove redundant explicitly defined copy ctors (Dan Raviv) Pull request description: CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise. Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ). (Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed). Tree-SHA512: c9294ebf5d955d230b44c6f0d20822975d44a34471a717d656f8b17181bcd2827f47ba897edf5accd650f5998c58aadc8ab3c91a3f556f1f6de36830ed4069ce
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CFeeRate and CTxMemPoolEntry have explicitly defined copy ctors which has the same functionality as the implicit default copy ctors which would have been generated otherwise.
Besides being redundant, it violates the rule of three (see https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming) ).
(Of course, the rule of three doesn't -really- cause a resource management issue here, but the reason for that is exactly that there is no need for an explicit copy ctor in the first place since no resources are being managed).