Disable Visual Studio Warning C4351

Currently Windows build is broken because of Warning C4351. Disable the warning before figuring out the right way to fix it.

CMakeLists.txt

@@ -60,7 +60,7 @@ add_custom_target(GenerateBuildVersion DEPENDS ${BUILD_VERSION_CC})
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zi /nologo  /EHsc /GS /Gd /GR /GF /fp:precise /Zc:wchar_t /Zc:forScope /errorReport:queue")
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /FC /d2Zi+ /W3 /WX /wd4127 /wd4800 /wd4996")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /FC /d2Zi+ /W3 /WX /wd4127 /wd4800 /wd4996 /wd4351")
 
 # Used to run CI build and tests so we can run faster
 set(OPTIMIZE_DEBUG_DEFAULT 0)        # Debug build is unoptimized by default use -DOPTDBG=1 to optimize

db/column_family.cc

@@ -481,7 +481,8 @@ std::unique_ptr<WriteControllerToken> SetupDelay(
     // because of hitting the max write buffer number.
     if (prev_compaction_neeed_bytes > 0 &&
         prev_compaction_neeed_bytes <= compaction_needed_bytes) {
-      write_rate /= kSlowdownRatio;
+      write_rate = static_cast<uint64_t>(static_cast<double>(write_rate) /
+                                         kSlowdownRatio);
       if (write_rate < kMinWriteRate) {
         write_rate = kMinWriteRate;
       }
@@ -489,7 +490,8 @@ std::unique_ptr<WriteControllerToken> SetupDelay(
       // We are speeding up by ratio of kSlowdownRatio when we have paid
       // compaction debt. But we'll never speed up to faster than the write rate
       // given by users.
-      write_rate *= kSlowdownRatio;
+      write_rate = static_cast<uint64_t>(static_cast<double>(write_rate) *
+                                         kSlowdownRatio);
       if (write_rate > max_write_rate) {
         write_rate = max_write_rate;
       }

db/db_impl.cc

@@ -580,8 +580,8 @@ void DBImpl::FindObsoleteFiles(JobContext* job_context, bool force,
                         &files);  // Ignore errors
       for (std::string file : files) {
         // TODO(icanadi) clean up this mess to avoid having one-off "/" prefixes
-        job_context->full_scan_candidate_files.emplace_back("/" + file,
+        job_context->full_scan_candidate_files.emplace_back(
-                                                            path_id);
+            "/" + file, static_cast<uint32_t>(path_id));
       }
     }
 

db/db_test.cc

@@ -8058,7 +8058,7 @@ TEST_F(DBTest, OptimizeFiltersForHits) {
   MoveFilesToLevel(7 /* level */, 1 /* column family index */);
 
   std::string value = Get(1, Key(0));
-  long prev_cache_filter_hits =
+  uint64_t prev_cache_filter_hits =
       TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT);
   value = Get(1, Key(0));
   ASSERT_EQ(prev_cache_filter_hits + 1,
@@ -8087,7 +8087,7 @@ TEST_F(DBTest, OptimizeFiltersForHits) {
 
   ReopenWithColumnFamilies({"default", "mypikachu"}, options);
 
-  long prev_cache_filter_misses =
+  uint64_t prev_cache_filter_misses =
       TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS);
   prev_cache_filter_hits = TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT);
   Get(1, Key(0));
@@ -9096,7 +9096,8 @@ TEST_F(DBTest, DelayedWriteRate) {
     dbfull()->TEST_WaitForFlushMemTable();
     estimated_sleep_time += size_memtable * 1000000u / cur_rate;
     // Slow down twice. One for memtable switch and one for flush finishes.
-    cur_rate /= kSlowdownRatio * kSlowdownRatio;
+    cur_rate = static_cast<uint64_t>(static_cast<double>(cur_rate) /
+                                     kSlowdownRatio / kSlowdownRatio);
   }
   // Estimate the total sleep time fall into the rough range.
   ASSERT_GT(env_->addon_time_.load(),
@@ -10324,7 +10325,7 @@ TEST_F(DBTest, PinnedDataIteratorRandomized) {
   Random rnd(301);
 
   int puts = 100000;
-  int key_pool = puts * 0.7;
+  int key_pool = static_cast<int>(puts * 0.7);
   int key_size = 100;
   int val_size = 1000;
   int seeks_percentage = 20;   // 20% of keys will be used to test seek()
@@ -10353,19 +10354,19 @@ TEST_F(DBTest, PinnedDataIteratorRandomized) {
 
       // Insert data to true_data map and to DB
       true_data[k] = v;
-      if (rnd.OneIn(100.0 / merge_percentage)) {
+      if (rnd.OneIn(static_cast<int>(100.0 / merge_percentage))) {
         ASSERT_OK(db_->Merge(WriteOptions(), k, v));
       } else {
         ASSERT_OK(Put(k, v));
       }
 
       // Pick random keys to be used to test Seek()
-      if (rnd.OneIn(100.0 / seeks_percentage)) {
+      if (rnd.OneIn(static_cast<int>(100.0 / seeks_percentage))) {
         random_keys.push_back(k);
       }
 
       // Delete some random keys
-      if (rnd.OneIn(100.0 / delete_percentage)) {
+      if (rnd.OneIn(static_cast<int>(100.0 / delete_percentage))) {
         deleted_keys.push_back(k);
         true_data.erase(k);
         ASSERT_OK(Delete(k));

db/repair.cc

@@ -190,7 +190,8 @@ class Repairer {
               assert(path_id == 0);
               logs_.push_back(number);
             } else if (type == kTableFile) {
-              table_fds_.emplace_back(number, path_id, 0);
+              table_fds_.emplace_back(number, static_cast<uint32_t>(path_id),
+                                      0);
             } else {
               // Ignore other files
             }