Merge bitcoin/bitcoin#35950: Update leveldb subtree to latest master

9f10ef5e96 Squashed 'src/leveldb/' changes from a7f9bdc611..13da2d6758 (fanquake)

Pull request description:

  Includes:
  * https://github.com/bitcoin-core/leveldb-subtree/pull/62
  * https://github.com/bitcoin-core/leveldb-subtree/pull/64 (used in #35911)

ACKs for top commit:
  l0rinc:
    code review ACK 3e76d22de2
  hebasto:
    ACK 3e76d22de2.
  sedited:
    ACK 3e76d22de2

Tree-SHA512: 88b9a673550ab95f99de5fb06c8313464b1a6b962a55aa911d7b8bb362eae71a283663460b1cab2aa99e37a066c3f52cfc834cf679b4db49d172bf91b32ae3fa

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();
   }