From ac16663bd6f83b31200991941fd0d8a20931dae3 Mon Sep 17 00:00:00 2001
From: Nathan Bronson <ngbronson@fb.com>
Date: Wed, 30 Dec 2015 05:49:06 -0800
Subject: [PATCH] use -Werror=missing-field-initializers, to closer match
 MyRocks build

Summary:
myrocks seems to build rocksdb using
-Wmissing-field-initializers (and treats warnings as errors).  This diff
adds that flag to the rocksdb build, and fixes the compilation failures
that result.  I have not checked for any other differences in the build
flags for rocksdb build as part of myrocks.

Test Plan: make check

Reviewers: sdong, rven

Reviewed By: rven

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D52443
---
 Makefile                 | 2 +-
 db/column_family_test.cc | 4 ++--
 db/db_impl.cc            | 2 +-
 db/db_test.cc            | 2 +-
 db/write_thread.cc       | 6 +++---
 db/write_thread.h        | 2 ++
 table/table_test.cc      | 2 +-
 7 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/Makefile b/Makefile
index 396b8e201..a6d3cae4d 100644
--- a/Makefile
+++ b/Makefile
@@ -192,7 +192,7 @@ ifndef DISABLE_WARNING_AS_ERROR
 endif
 
 CFLAGS += $(WARNING_FLAGS) -I. -I./include $(PLATFORM_CCFLAGS) $(OPT)
-CXXFLAGS += $(WARNING_FLAGS) -I. -I./include $(PLATFORM_CXXFLAGS) $(OPT) -Woverloaded-virtual -Wnon-virtual-dtor -Wno-missing-field-initializers
+CXXFLAGS += $(WARNING_FLAGS) -I. -I./include $(PLATFORM_CXXFLAGS) $(OPT) -Woverloaded-virtual -Wnon-virtual-dtor -Werror=missing-field-initializers
 
 LDFLAGS += $(PLATFORM_LDFLAGS)
 
diff --git a/db/column_family_test.cc b/db/column_family_test.cc
index ba048e64e..70035a939 100644
--- a/db/column_family_test.cc
+++ b/db/column_family_test.cc
@@ -1990,10 +1990,10 @@ TEST_F(ColumnFamilyTest, FlushAndDropRaceCondition) {
   Reopen({options, options});
 
   rocksdb::SyncPoint::GetInstance()->LoadDependency(
-      {{"VersionSet::LogAndApply::ColumnFamilyDrop:1"
+      {{"VersionSet::LogAndApply::ColumnFamilyDrop:1",
         "FlushJob::InstallResults"},
        {"FlushJob::InstallResults",
-        "VersionSet::LogAndApply::ColumnFamilyDrop:2", }});
+        "VersionSet::LogAndApply::ColumnFamilyDrop:2"}});
 
   rocksdb::SyncPoint::GetInstance()->EnableProcessing();
   test::SleepingBackgroundTask sleeping_task;
diff --git a/db/db_impl.cc b/db/db_impl.cc
index dd6519fba..661e3b48a 100644
--- a/db/db_impl.cc
+++ b/db/db_impl.cc
@@ -4383,7 +4383,7 @@ Status DBImpl::WriteImpl(const WriteOptions& write_options,
             &flush_scheduler_, write_options.ignore_missing_column_families,
             0 /*log_number*/, this, false /*dont_filter_deletes*/);
       } else {
-        WriteThread::ParallelGroup pg{};
+        WriteThread::ParallelGroup pg;
         pg.leader = &w;
         pg.last_writer = last_writer;
         pg.early_exit_allowed = !need_log_sync;
diff --git a/db/db_test.cc b/db/db_test.cc
index 8d37d1c44..ff983c36c 100644
--- a/db/db_test.cc
+++ b/db/db_test.cc
@@ -5653,7 +5653,7 @@ TEST_F(DBTest, GroupCommitTest) {
     ASSERT_TRUE(!itr->Valid());
     delete itr;
 
-    HistogramData hist_data = {0};
+    HistogramData hist_data = {0, 0, 0, 0, 0};
     options.statistics->histogramData(DB_WRITE, &hist_data);
     ASSERT_GT(hist_data.average, 0.0);
   } while (ChangeOptions(kSkipNoSeekToLast));
diff --git a/db/write_thread.cc b/db/write_thread.cc
index 5e43937ee..e153f319b 100644
--- a/db/write_thread.cc
+++ b/db/write_thread.cc
@@ -213,7 +213,7 @@ void WriteThread::CreateMissingNewerLinks(Writer* head) {
 }
 
 void WriteThread::JoinBatchGroup(Writer* w) {
-  static AdaptationContext ctx{"JoinBatchGroup"};
+  static AdaptationContext ctx("JoinBatchGroup");
 
   assert(w->batch != nullptr);
   bool linked_as_leader;
@@ -323,7 +323,7 @@ void WriteThread::LaunchParallelFollowers(ParallelGroup* pg,
 }
 
 bool WriteThread::CompleteParallelWorker(Writer* w) {
-  static AdaptationContext ctx{"CompleteParallelWorker"};
+  static AdaptationContext ctx("CompleteParallelWorker");
 
   auto* pg = w->parallel_group;
   if (!w->status.ok()) {
@@ -419,7 +419,7 @@ void WriteThread::ExitAsBatchGroupLeader(Writer* leader, Writer* last_writer,
 }
 
 void WriteThread::EnterUnbatched(Writer* w, InstrumentedMutex* mu) {
-  static AdaptationContext ctx{"EnterUnbatched"};
+  static AdaptationContext ctx("EnterUnbatched");
 
   assert(w->batch == nullptr);
   bool linked_as_leader;
diff --git a/db/write_thread.h b/db/write_thread.h
index 2fdd4a02f..e31904ed1 100644
--- a/db/write_thread.h
+++ b/db/write_thread.h
@@ -207,6 +207,8 @@ class WriteThread {
   struct AdaptationContext {
     const char* name;
     std::atomic<int32_t> value;
+
+    explicit AdaptationContext(const char* name0) : name(name0), value(0) {}
   };
 
  private:
diff --git a/table/table_test.cc b/table/table_test.cc
index cf58a2477..eb2b52ef9 100644
--- a/table/table_test.cc
+++ b/table/table_test.cc
@@ -1998,7 +1998,7 @@ TEST_F(HarnessTest, Randomized) {
 #ifndef ROCKSDB_LITE
 TEST_F(HarnessTest, RandomizedLongDB) {
   Random rnd(test::RandomSeed());
-  TestArgs args = { DB_TEST, false, 16, kNoCompression, 0 };
+  TestArgs args = {DB_TEST, false, 16, kNoCompression, 0, false};
   Init(args);
   int num_entries = 100000;
   for (int e = 0; e < num_entries; e++) {