variable 'worstStart' set but not used [-Wunused-but-set-variable]

[andreicristianpetcu]

Hi,
I tried to build stellard but I got this error

$scons
scons: Reading SConscript files ...

Configuration:
        CC gcc
       CXX g++
  CXXFLAGS -O3 -fno-strict-aliasing -pthread -Wno-invalid-offsetof -Wformat
           -Wno-unused-local-typedefs -g -DDEBUG -D_DEBUG -frtti -std=c++11
 LINKFLAGS -pthread -rdynamic -pthread
      LIBS ssl crypto dl protobuf pthread z /usr/local/lib/libsodium.a
           boost_date_time boost_filesystem boost_program_options boost_regex
           boost_system boost_thread dl rt

Building:

scons: done reading SConscript files.
scons: Building targets ...
    src/ripple/proto/ripple.proto
    src/ripple/proto/ripple.pb.cc
    src/ripple/beast/ripple_beast.cpp
In file included from src/leveldb/../beast/beast/container/tests/hash_append.test.cpp:26:0,
                 from src/leveldb/../beast/beast/container/Container.cpp:29,
                 from src/ripple/beast/ripple_beast.cpp:36:
src/leveldb/../beast/beast/container/tests/hash_metrics.h: In instantiation of 'double beast::hash_metrics::windowed_score(FwdIter, FwdIter) [with FwdIter = __gnu_cxx::__normal_iterator<const long unsigned int*, s
td::vector<long unsigned int> >]':
src/leveldb/../beast/beast/container/tests/hash_append.test.cpp:421:45:   required from 'void beast::hash_append_test::measure_hashes(beast::hash_append_test::results_t&, const Hashes&) [with Hasher = beast::hash_
append_tests::jenkins1; Hashes = std::vector<long unsigned int>]'
src/leveldb/../beast/beast/container/tests/hash_append.test.cpp:436:49:   required from 'void beast::hash_append_test::measure_keys(beast::hash_append_test::results_t&, const Keys&) [with Hasher = beast::hash_appe
nd_tests::jenkins1; Keys = std::set<beast::hash_append_tests::SlowKey, std::less<beast::hash_append_tests::SlowKey>, std::allocator<beast::hash_append_tests::SlowKey> >]'
src/leveldb/../beast/beast/container/tests/hash_append.test.cpp:445:45:   required from 'void beast::hash_append_test::test_hasher(const string&, std::size_t) [with Hasher = beast::hash_append_tests::jenkins1; Key
 = beast::hash_append_tests::SlowKey; std::string = std::basic_string<char>; std::size_t = long unsigned int]'
src/leveldb/../beast/beast/container/tests/hash_append.test.cpp:477:96:   required from here
src/leveldb/../beast/beast/container/tests/hash_metrics.h:172:9: warning: variable 'worstStart' set but not used [-Wunused-but-set-variable]
     int worstStart = -1;
         ^
src/leveldb/../beast/beast/container/tests/hash_metrics.h:173:9: warning: variable 'worstWidth' set but not used [-Wunused-but-set-variable]
     int worstWidth = -1;
         ^
In file included from src/leveldb/../beast/modules/beast_core/beast_core.cpp:194:0,
                 from src/ripple/beast/ripple_beast.cpp:29:
src/leveldb/../beast/modules/beast_core/native/linux_Threads.cpp: In function 'void beast::swapUserAndEffectiveUser()':
src/leveldb/../beast/modules/beast_core/native/linux_Threads.cpp:85:42: warning: ignoring return value of 'int setreuid(__uid_t, __uid_t)', declared with attribute warn_unused_result [-Wunused-result]
     (void) setreuid (geteuid(), getuid());
                                          ^
src/leveldb/../beast/modules/beast_core/native/linux_Threads.cpp:86:42: warning: ignoring return value of 'int setregid(__gid_t, __gid_t)', declared with attribute warn_unused_result [-Wunused-result]
     (void) setregid (getegid(), getgid());

    src/ripple/beast/ripple_beastc.c
    src/ripple_data/crypto/EdKeyPair.cpp
    src/ripple_data/crypto/StellarPrivateKey.cpp
    src/ripple_data/crypto/StellarPublicKey.cpp
    src/ripple_app/data/Database.cpp
    src/ripple_overlay/impl/PeerImp.cpp
In file included from src/ripple_app/ledger/Ledger.h:33:0,
                 from src/ripple_app/ledger/LedgerMaster.h:25,
                 from src/ripple_overlay/impl/PeerImp.cpp:11:
src/ripple_app/tx/TransactionMeta.h: In member function 'bool ripple::TransactionMetaSet::hasDeliveredAmount() const':
src/ripple_app/tx/TransactionMeta.h:114:17: error: cannot convert 'const boost::optional<ripple::STAmount>' to 'bool' in return
          return mDelivered;
                 ^
scons: *** [build/obj/src/ripple_overlay/impl/PeerImp.o] Error 1
scons: building terminated because of errors.

Any clue what I'm doing wrong? :P Thank you!

[ioutrade]

This problem replicated with boost version 1.57. Roll back to version 1.55, manually download it on boost.org from Old Boost Releases or from the Sourceforge download page.