lalitb · lalitb · Feb 8, 2026 · Feb 8, 2026 · Feb 8, 2026
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -341,6 +341,8 @@ jobs:
     - name: setup
       run: |
         ./ci/setup_windows_ci_environment.ps1
+    - name: verify windows deprecation behavior
+      run: ./ci/check_windows_event_api_deprecation.ps1
     - name: run tests
       run: ./ci/do_ci.ps1 cmake.maintainer.test
 
@@ -359,6 +361,8 @@ jobs:
     - name: setup
       run: |
         ./ci/setup_windows_ci_environment.ps1
+    - name: verify windows deprecation behavior
+      run: ./ci/check_windows_event_api_deprecation.ps1
     - name: run tests
       env:
         CXX_STANDARD: '20'
@@ -379,6 +383,8 @@ jobs:
     - name: setup
       run: |
         ./ci/setup_windows_ci_environment.ps1
+    - name: verify windows deprecation behavior
+      run: ./ci/check_windows_event_api_deprecation.ps1
     - name: run tests
       env:
         CXX_STANDARD: '20'

diff --git a/api/include/opentelemetry/logs/event_logger.h b/api/include/opentelemetry/logs/event_logger.h
@@ -18,14 +18,7 @@ namespace logs
 #  if defined(_MSC_VER)
 #    pragma warning(push)
 #    pragma warning(disable : 4996)
-#  elif defined(__GNUC__) && !defined(__clang__) && !defined(__apple_build_version__)
-#    pragma GCC diagnostic push
-#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#  elif defined(__clang__) || defined(__apple_build_version__)
-#    pragma clang diagnostic push
-#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
 #  endif
-
 /**
  * Handles event log record creation.
  **/
@@ -88,13 +81,8 @@ class OPENTELEMETRY_DEPRECATED EventLogger
   void IgnoreTraitResult(ValueType &&...)
   {}
 };
-
 #  if defined(_MSC_VER)
 #    pragma warning(pop)
-#  elif defined(__GNUC__) && !defined(__clang__) && !defined(__apple_build_version__)
-#    pragma GCC diagnostic pop
-#  elif defined(__clang__) || defined(__apple_build_version__)
-#    pragma clang diagnostic pop
 #  endif
 #endif
 }  // namespace logs

diff --git a/api/include/opentelemetry/logs/event_logger_provider.h b/api/include/opentelemetry/logs/event_logger_provider.h
@@ -18,14 +18,7 @@ class Logger;
 #  if defined(_MSC_VER)
 #    pragma warning(push)
 #    pragma warning(disable : 4996)
-#  elif defined(__GNUC__) && !defined(__clang__) && !defined(__apple_build_version__)
-#    pragma GCC diagnostic push
-#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#  elif defined(__clang__) || defined(__apple_build_version__)
-#    pragma clang diagnostic push
-#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
 #  endif
-
 /**
  * Creates new EventLogger instances.
  */
@@ -43,13 +36,8 @@ class OPENTELEMETRY_DEPRECATED EventLoggerProvider
       nostd::shared_ptr<Logger> delegate_logger,
       nostd::string_view event_domain) noexcept = 0;
 };
-
 #  if defined(_MSC_VER)
 #    pragma warning(pop)
-#  elif defined(__GNUC__) && !defined(__clang__) && !defined(__apple_build_version__)
-#    pragma GCC diagnostic pop
-#  elif defined(__clang__) || defined(__apple_build_version__)
-#    pragma clang diagnostic pop
 #  endif
 #endif
 }  // namespace logs

diff --git a/api/include/opentelemetry/logs/provider.h b/api/include/opentelemetry/logs/provider.h
@@ -48,16 +48,6 @@ class OPENTELEMETRY_EXPORT Provider
   }
 
 #if OPENTELEMETRY_ABI_VERSION_NO < 2
-#  if defined(_MSC_VER)
-#    pragma warning(push)
-#    pragma warning(disable : 4996)
-#  elif defined(__GNUC__) && !defined(__clang__) && !defined(__apple_build_version__)
-#    pragma GCC diagnostic push
-#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-#  elif defined(__clang__) || defined(__apple_build_version__)
-#    pragma clang diagnostic push
-#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
-#  endif
   /**
    * Returns the singleton EventLoggerProvider.
    *
@@ -68,6 +58,9 @@ class OPENTELEMETRY_EXPORT Provider
   GetEventLoggerProvider() noexcept
   {
     std::lock_guard<common::SpinLockMutex> guard(GetLock());
+#  if defined(_MSC_VER)
+#    pragma warning(suppress : 4996)
+#  endif
     return nostd::shared_ptr<EventLoggerProvider>(GetEventProvider());
   }
 
@@ -78,15 +71,11 @@ class OPENTELEMETRY_EXPORT Provider
       const nostd::shared_ptr<EventLoggerProvider> &tp) noexcept
   {
     std::lock_guard<common::SpinLockMutex> guard(GetLock());
-    GetEventProvider() = tp;
-  }
 #  if defined(_MSC_VER)
-#    pragma warning(pop)
-#  elif defined(__GNUC__) && !defined(__clang__) && !defined(__apple_build_version__)
-#    pragma GCC diagnostic pop
-#  elif defined(__clang__) || defined(__apple_build_version__)
-#    pragma clang diagnostic pop
+#    pragma warning(suppress : 4996)
 #  endif
+    GetEventProvider() = tp;
+  }
 #endif
 
 private:

diff --git a/ci/check_windows_event_api_deprecation.ps1 b/ci/check_windows_event_api_deprecation.ps1
@@ -0,0 +1,92 @@
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+$ErrorActionPreference = "Stop"
+trap { $host.SetShouldExit(1) }
+
+$SRC_DIR = (Get-Item -Path ".\").FullName
+$CHECK_DIR = Join-Path "$SRC_DIR" "build/windows-deprecation-check"
+$BUILD_DIR = Join-Path "$CHECK_DIR" "build"
+
+if (Test-Path "$CHECK_DIR") {
+  Remove-Item -Path "$CHECK_DIR" -Recurse -Force
+}
+New-Item -Path "$CHECK_DIR" -ItemType Directory | Out-Null
+
+$CMAKE_LISTS = @"
+cmake_minimum_required(VERSION 3.15)
+project(windows_deprecation_check LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+add_library(logger_only OBJECT logger_only.cpp)
+target_include_directories(logger_only PRIVATE "${SRC_DIR}/api/include")
+if (MSVC)
+  target_compile_options(logger_only PRIVATE /W4 /WX /we4996)
+endif()
+
+add_library(event_use OBJECT event_use.cpp)
+target_include_directories(event_use PRIVATE "${SRC_DIR}/api/include")
+if (MSVC)
+  target_compile_options(event_use PRIVATE /W4 /WX /we4996)
+endif()
+"@
+
+$LOGGER_ONLY = @"
+#include "opentelemetry/logs/provider.h"
+
+int main()
+{
+  auto lp = opentelemetry::logs::Provider::GetLoggerProvider();
+  (void)lp;
+  return 0;
+}
+"@
+
+$EVENT_USE = @"
+#include "opentelemetry/logs/provider.h"
+
+int main()
+{
+  auto ep = opentelemetry::logs::Provider::GetEventLoggerProvider();
+  (void)ep;
+  return 0;
+}
+"@
+
+Set-Content -Path (Join-Path "$CHECK_DIR" "CMakeLists.txt") -Value $CMAKE_LISTS
+Set-Content -Path (Join-Path "$CHECK_DIR" "logger_only.cpp") -Value $LOGGER_ONLY
+Set-Content -Path (Join-Path "$CHECK_DIR" "event_use.cpp") -Value $EVENT_USE
+
+Push-Location -Path "$CHECK_DIR"
+try {
+  cmake -S . -B build
+  $exit = $LASTEXITCODE
+  if ($exit -ne 0) {
+    exit $exit
+  }
+
+  cmake --build "$BUILD_DIR" --target logger_only
+  $exit = $LASTEXITCODE
+  if ($exit -ne 0) {
+    throw "Expected logger_only target to compile without deprecation errors"
+  }
+
+  $EVENT_LOG = Join-Path "$CHECK_DIR" "event_use_build.log"
+  cmake --build "$BUILD_DIR" --target event_use *> "$EVENT_LOG"
+  $exit = $LASTEXITCODE
+  if ($exit -eq 0) {
+    throw "Expected event_use target to fail with C4996 (/we4996), but it compiled successfully"
+  }
+
+  $event_output = Get-Content -Path "$EVENT_LOG" -Raw
+  if ($event_output -notmatch "C4996") {
+    throw "event_use failed, but not due to C4996 deprecation warning. See $EVENT_LOG"
+  }
+
+  Write-Output "Windows deprecation behavior check passed: logger-only succeeds and Event API usage fails with C4996 (/we4996)."
+}
+finally {
+  Pop-Location
+}