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Remove 'boost::optional'-related gcc warnings

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Hennadii Stepanov 2019-01-30 13:28:41 +02:00
parent 72ca72e637
commit 2d483142a7
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3 changed files with 13 additions and 2 deletions
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9
src/optional.h
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@ -5,12 +5,21 @@
#ifndef BITCOIN_OPTIONAL_H #ifndef BITCOIN_OPTIONAL_H
#define BITCOIN_OPTIONAL_H #define BITCOIN_OPTIONAL_H
#include <utility>
#include <boost/optional.hpp> #include <boost/optional.hpp>
//! Substitute for C++17 std::optional //! Substitute for C++17 std::optional
template <typename T> template <typename T>
using Optional = boost::optional<T>; using Optional = boost::optional<T>;
//! Substitute for C++17 std::make_optional
template <typename T>
Optional<T> MakeOptional(bool condition, T&& value)
{
return boost::make_optional(condition, std::forward<T>(value));
}
//! Substitute for C++17 std::nullopt //! Substitute for C++17 std::nullopt
static auto& nullopt = boost::none; static auto& nullopt = boost::none;

3
src/wallet/rpcwallet.cpp
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@ -1591,7 +1591,8 @@ static UniValue listsinceblock(const JSONRPCRequest& request)
auto locked_chain = pwallet->chain().lock(); auto locked_chain = pwallet->chain().lock();
LOCK(pwallet->cs_wallet); LOCK(pwallet->cs_wallet);
Optional<int> height; // Height of the specified block or the common ancestor, if the block provided was in a deactivated chain. // The way the 'height' is initialized is just a workaround for the gcc bug #47679 since version 4.6.0.
Optional<int> height = MakeOptional(false, int()); // Height of the specified block or the common ancestor, if the block provided was in a deactivated chain.
Optional<int> altheight; // Height of the specified block, even if it's in a deactivated chain. Optional<int> altheight; // Height of the specified block, even if it's in a deactivated chain.
int target_confirms = 1; int target_confirms = 1;
isminefilter filter = ISMINE_SPENDABLE; isminefilter filter = ISMINE_SPENDABLE;

3
src/wallet/wallet.cpp
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@ -1642,7 +1642,8 @@ CWallet::ScanResult CWallet::ScanForWalletTransactions(const uint256& start_bloc
fAbortRescan = false; fAbortRescan = false;
ShowProgress(strprintf("%s " + _("Rescanning..."), GetDisplayName()), 0); // show rescan progress in GUI as dialog or on splashscreen, if -rescan on startup ShowProgress(strprintf("%s " + _("Rescanning..."), GetDisplayName()), 0); // show rescan progress in GUI as dialog or on splashscreen, if -rescan on startup
uint256 tip_hash; uint256 tip_hash;
Optional<int> block_height; // The way the 'block_height' is initialized is just a workaround for the gcc bug #47679 since version 4.6.0.
Optional<int> block_height = MakeOptional(false, int());
double progress_begin; double progress_begin;
double progress_end; double progress_end;
{ {