make warnings 0.18.0rc1 #15539

1. 
   Viral commented at 4:37 pm on March 5, 2019: none

   unsure if worth reporting or not but I get these warnings on Debian

    0  CXX      leveldb/util/leveldb_libleveldb_a-logging.o
    1leveldb/util/logging.cc: In function ‘bool leveldb::ConsumeDecimalNumber(leveldb::Slice*, uint64_t*)’:
    2leveldb/util/logging.cc:58:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    3           (v == kMaxUint64/10 && delta > kMaxUint64%10)) {
    4                                  ~~~~~~^~~~~~~~~~~~~~~
    5  CXX      leveldb/util/leveldb_libleveldb_a-options.o
    6  CXX      leveldb/util/leveldb_libleveldb_a-status.o
    7  CXX      leveldb/port/leveldb_libleveldb_a-port_posix.o
    8leveldb/port/port_posix.cc: In function ‘bool leveldb::port::HasAcceleratedCRC32C()’:
    9leveldb/port/port_posix.cc:60:15: warning: ‘ecx’ may be used uninitialized in this function [-Wmaybe-uninitialized]
   10   return (ecx & (1 << 20)) != 0;
   11          ~~~~~^~~~~~~~~~~~
   

   0  CXX      bench/bench_bench_bitcoin-base58.o
   1bench/base58.cpp: In function ‘void Base58Decode(benchmark::State&)’:
   2bench/base58.cpp:52:39: warning: ignoring return value of ‘bool DecodeBase58(const char*, std::vector<unsigned char>&)’, declared with attribute warn_unused_result [-Wunused-result]
   3         (void) DecodeBase58(addr, vch);
   4                                       ^
   

2. Viral closed this on Mar 5, 2019

   ---

3. 
   ibrahimalrashd commented at 7:56 pm on August 13, 2019: none

   yes me too

    0 warning: comparison between signed and unsigned integer expressions [-Wsign-compar
    1]
    2           (v == kMaxUint64/10 && delta > kMaxUint64%10)) {
    3                                  ~~~~~~^~~~~~~~~~~~~~~
    4  CXX      leveldb/util/leveldb_libleveldb_a-options.o
    5  CXX      leveldb/util/leveldb_libleveldb_a-status.o
    6  CXX      leveldb/port/leveldb_libleveldb_a-port_posix.o
    7leveldb/port/port_posix.cc: In function ‘bool leveldb::port::HasAcceleratedCRC32C()’:
    8leveldb/port/port_posix.cc:60:15: warning: ‘ecx’ may be used uninitialized in this function [-Wmaybe-uninitialize
    9]
   10   return (ecx & (1 << 20)) != 0;
   11          ~~~~~^~~~~~~~~~~~
   

4. DrahtBot locked this on Dec 16, 2021

Contributors
Viral ibrahimalrashd