Update leveldb subtree to latest master

src/leveldb/.github/workflows/ci.yml

@@ -0,0 +1,12 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - run: cmake -B build -DBUILD_SHARED_LIBS=OFF
+      - run: cmake --build build -j$(nproc)
+      - run: ctest --test-dir build --output-on-failure -j$(nproc)

src/leveldb/benchmarks/db_bench_sqlite3.cc

@@ -5,6 +5,7 @@
 #include <sqlite3.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <time.h>
 
 #include "util/histogram.h"
 #include "util/random.h"

src/leveldb/util/env_posix.cc

@@ -730,9 +730,9 @@ class PosixEnv : public Env {
   }
 
  private:
-  void BackgroundThreadMain();
+  [[noreturn]] void BackgroundThreadMain();
 
-  static void BackgroundThreadEntryPoint(PosixEnv* env) {
+  [[noreturn]] static void BackgroundThreadEntryPoint(PosixEnv* env) {
     env->BackgroundThreadMain();
   }
 

src/leveldb/util/env_windows.cc

@@ -675,9 +675,9 @@ class WindowsEnv : public Env {
   }
 
  private:
-  void BackgroundThreadMain();
+  [[noreturn]] void BackgroundThreadMain();
 
-  static void BackgroundThreadEntryPoint(WindowsEnv* env) {
+  [[noreturn]] static void BackgroundThreadEntryPoint(WindowsEnv* env) {
     env->BackgroundThreadMain();
   }