diff --git a/src/core/gzip/include/sourcemeta/core/gzip_error.h b/src/core/gzip/include/sourcemeta/core/gzip_error.h
index 111a14c1f7..8bad9c9c84 100644
--- a/src/core/gzip/include/sourcemeta/core/gzip_error.h
+++ b/src/core/gzip/include/sourcemeta/core/gzip_error.h
@@ -15,6 +15,7 @@ namespace sourcemeta::core {
 // safe
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -37,7 +38,7 @@ class SOURCEMETA_CORE_GZIP_EXPORT GZIPError : public std::exception {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/gzip/include/sourcemeta/core/gzip_streambuf.h b/src/core/gzip/include/sourcemeta/core/gzip_streambuf.h
index a104374dc9..9e08b68809 100644
--- a/src/core/gzip/include/sourcemeta/core/gzip_streambuf.h
+++ b/src/core/gzip/include/sourcemeta/core/gzip_streambuf.h
@@ -34,12 +34,13 @@ class SOURCEMETA_CORE_GZIP_EXPORT GZIPStreamBuffer : public std::streambuf {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   struct Internal;
   std::unique_ptr<Internal> internal_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/html/include/sourcemeta/core/html_buffer.h b/src/core/html/include/sourcemeta/core/html_buffer.h
index 42e3fd86d7..d72b08ac11 100644
--- a/src/core/html/include/sourcemeta/core/html_buffer.h
+++ b/src/core/html/include/sourcemeta/core/html_buffer.h
@@ -83,11 +83,12 @@ class SOURCEMETA_CORE_HTML_EXPORT HTMLBuffer {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::string buffer_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
   char *cursor_{nullptr};
   char *end_{nullptr};
diff --git a/src/core/html/include/sourcemeta/core/html_writer.h b/src/core/html/include/sourcemeta/core/html_writer.h
index 829d581734..24d643ab8b 100644
--- a/src/core/html/include/sourcemeta/core/html_writer.h
+++ b/src/core/html/include/sourcemeta/core/html_writer.h
@@ -99,6 +99,7 @@ class SOURCEMETA_CORE_HTML_EXPORT HTMLWriter {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
 
@@ -470,7 +471,7 @@ class SOURCEMETA_CORE_HTML_EXPORT HTMLWriter {
   bool tag_open_{false};
   bool tag_open_is_void_{false};
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/http/include/sourcemeta/core/http_error.h b/src/core/http/include/sourcemeta/core/http_error.h
index 86b5a3a97e..bfd64d03ad 100644
--- a/src/core/http/include/sourcemeta/core/http_error.h
+++ b/src/core/http/include/sourcemeta/core/http_error.h
@@ -19,6 +19,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -93,7 +94,7 @@ class SOURCEMETA_CORE_HTTP_EXPORT HTTPStatusError : public HTTPError {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/http/include/sourcemeta/core/http_system.h b/src/core/http/include/sourcemeta/core/http_system.h
index fa6496b6d3..5268c96789 100644
--- a/src/core/http/include/sourcemeta/core/http_system.h
+++ b/src/core/http/include/sourcemeta/core/http_system.h
@@ -28,6 +28,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -332,7 +333,7 @@ class SOURCEMETA_CORE_HTTP_EXPORT HTTPSystemRequest {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/jose/include/sourcemeta/core/jose_error.h b/src/core/jose/include/sourcemeta/core/jose_error.h
index 513e815d5c..e50054a4ba 100644
--- a/src/core/jose/include/sourcemeta/core/jose_error.h
+++ b/src/core/jose/include/sourcemeta/core/jose_error.h
@@ -10,6 +10,7 @@
 namespace sourcemeta::core {
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -50,7 +51,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWEParseError : public std::exception {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/jose/include/sourcemeta/core/jose_jwe.h b/src/core/jose/include/sourcemeta/core/jose_jwe.h
index ebf610ebf5..0ff866be1d 100644
--- a/src/core/jose/include/sourcemeta/core/jose_jwe.h
+++ b/src/core/jose/include/sourcemeta/core/jose_jwe.h
@@ -100,6 +100,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWE {
   static auto parse(const std::string_view input, JWE &result) -> bool;
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::string protected_header_;
@@ -111,7 +112,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWE {
   std::optional<JWEAlgorithm> algorithm_;
   std::optional<JWEEncryption> encryption_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/jose/include/sourcemeta/core/jose_jwk.h b/src/core/jose/include/sourcemeta/core/jose_jwk.h
index 8a1e0c2c4f..f1e97a616d 100644
--- a/src/core/jose/include/sourcemeta/core/jose_jwk.h
+++ b/src/core/jose/include/sourcemeta/core/jose_jwk.h
@@ -142,6 +142,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWK {
   static auto parse(const JSON &value, JWK &result) -> bool;
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   Type type_{Type::RSA};
@@ -156,7 +157,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWK {
   std::string coordinate_y_;
   std::string public_point_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/jose/include/sourcemeta/core/jose_jwk_private.h b/src/core/jose/include/sourcemeta/core/jose_jwk_private.h
index 5a96ac9340..037f690242 100644
--- a/src/core/jose/include/sourcemeta/core/jose_jwk_private.h
+++ b/src/core/jose/include/sourcemeta/core/jose_jwk_private.h
@@ -145,6 +145,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWKPrivate {
   static auto parse(const JSON &value, JWKPrivate &result) -> bool;
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   Type type_{Type::RSA};
@@ -159,7 +160,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWKPrivate {
   std::string coordinate_y_;
   std::string public_point_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/jose/include/sourcemeta/core/jose_jwks.h b/src/core/jose/include/sourcemeta/core/jose_jwks.h
index f7eebbdd70..e32dac7bdf 100644
--- a/src/core/jose/include/sourcemeta/core/jose_jwks.h
+++ b/src/core/jose/include/sourcemeta/core/jose_jwks.h
@@ -82,11 +82,12 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWKS {
   static auto parse(const JSON &value, JWKS &result) -> bool;
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::vector<JWK> keys_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/jose/include/sourcemeta/core/jose_jwks_provider.h b/src/core/jose/include/sourcemeta/core/jose_jwks_provider.h
index 98b9cf826c..e8dbfa165c 100644
--- a/src/core/jose/include/sourcemeta/core/jose_jwks_provider.h
+++ b/src/core/jose/include/sourcemeta/core/jose_jwks_provider.h
@@ -156,6 +156,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWKSProvider {
       -> std::shared_ptr<const JWKS>;
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   const std::string jwks_uri_;
@@ -167,7 +168,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWKSProvider {
   std::chrono::system_clock::time_point next_refresh_{};
   std::chrono::system_clock::time_point unknown_kid_cooldown_until_{};
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/jose/include/sourcemeta/core/jose_jwt.h b/src/core/jose/include/sourcemeta/core/jose_jwt.h
index 0e803e8ba2..be458cba8d 100644
--- a/src/core/jose/include/sourcemeta/core/jose_jwt.h
+++ b/src/core/jose/include/sourcemeta/core/jose_jwt.h
@@ -120,6 +120,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWT {
   static auto parse(const std::string_view input, JWT &result) -> bool;
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::string_view signing_input_;
@@ -128,7 +129,7 @@ class SOURCEMETA_CORE_JOSE_EXPORT JWT {
   JSON payload_{nullptr};
   std::optional<JWSAlgorithm> algorithm_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/json/include/sourcemeta/core/json_array.h b/src/core/json/include/sourcemeta/core/json_array.h
index 651f063d71..af4c55e7a8 100644
--- a/src/core/json/include/sourcemeta/core/json_array.h
+++ b/src/core/json/include/sourcemeta/core/json_array.h
@@ -111,11 +111,12 @@ template <typename Value> class JSONArray {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   Container data_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/json/include/sourcemeta/core/json_error.h b/src/core/json/include/sourcemeta/core/json_error.h
index bf2d93ce1e..1b2575f2f7 100644
--- a/src/core/json/include/sourcemeta/core/json_error.h
+++ b/src/core/json/include/sourcemeta/core/json_error.h
@@ -18,6 +18,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -93,7 +94,7 @@ class SOURCEMETA_CORE_JSON_EXPORT JSONFileParseError : public JSONParseError {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/json/include/sourcemeta/core/json_object.h b/src/core/json/include/sourcemeta/core/json_object.h
index b55fe70f94..e4ed9fe051 100644
--- a/src/core/json/include/sourcemeta/core/json_object.h
+++ b/src/core/json/include/sourcemeta/core/json_object.h
@@ -822,12 +822,13 @@ template <typename Key, typename Value, typename Hash> class JSONObject {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   static constexpr Hash HASHER{};
   underlying_type data_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/json/include/sourcemeta/core/json_value.h b/src/core/json/include/sourcemeta/core/json_value.h
index bb90649fdc..f5b6dca0b7 100644
--- a/src/core/json/include/sourcemeta/core/json_value.h
+++ b/src/core/json/include/sourcemeta/core/json_value.h
@@ -2479,6 +2479,7 @@ class SOURCEMETA_CORE_JSON_EXPORT JSON {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   union {
@@ -2495,7 +2496,7 @@ class SOURCEMETA_CORE_JSON_EXPORT JSON {
   // footprint
   static_assert(sizeof(Decimal) <= sizeof(String));
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
   auto maybe_destruct_union() -> void;
 };
diff --git a/src/core/jsonl/include/sourcemeta/core/jsonl.h b/src/core/jsonl/include/sourcemeta/core/jsonl.h
index 3b05afe4e2..91186a4e78 100644
--- a/src/core/jsonl/include/sourcemeta/core/jsonl.h
+++ b/src/core/jsonl/include/sourcemeta/core/jsonl.h
@@ -87,13 +87,14 @@ class SOURCEMETA_CORE_JSONL_EXPORT JSONL {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::basic_istream<JSON::Char, JSON::CharTraits> *stream_;
   struct Internal;
   std::unique_ptr<Internal> internal_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/jsonl/include/sourcemeta/core/jsonl_iterator.h b/src/core/jsonl/include/sourcemeta/core/jsonl_iterator.h
index 92ab196340..bdf3635694 100644
--- a/src/core/jsonl/include/sourcemeta/core/jsonl_iterator.h
+++ b/src/core/jsonl/include/sourcemeta/core/jsonl_iterator.h
@@ -49,6 +49,7 @@ class SOURCEMETA_CORE_JSONL_EXPORT ConstJSONLIterator {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   // Use PIMPL idiom to hide internal details, mainly
@@ -56,7 +57,7 @@ class SOURCEMETA_CORE_JSONL_EXPORT ConstJSONLIterator {
   struct Internal;
   std::unique_ptr<Internal> internal_{};
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/jsonld/include/sourcemeta/core/jsonld_error.h b/src/core/jsonld/include/sourcemeta/core/jsonld_error.h
index 5ce06f91a6..411b55f2bc 100644
--- a/src/core/jsonld/include/sourcemeta/core/jsonld_error.h
+++ b/src/core/jsonld/include/sourcemeta/core/jsonld_error.h
@@ -18,6 +18,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -82,7 +83,7 @@ class SOURCEMETA_CORE_JSONLD_EXPORT JSONLDFragmentError : public JSONLDError {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/jsonpath/include/sourcemeta/core/jsonpath_error.h b/src/core/jsonpath/include/sourcemeta/core/jsonpath_error.h
index 1773df9618..db8d8fb2fb 100644
--- a/src/core/jsonpath/include/sourcemeta/core/jsonpath_error.h
+++ b/src/core/jsonpath/include/sourcemeta/core/jsonpath_error.h
@@ -14,6 +14,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -39,7 +40,7 @@ class SOURCEMETA_CORE_JSONPATH_EXPORT JSONPathParseError
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/jsonpointer/include/sourcemeta/core/jsonpointer_position.h b/src/core/jsonpointer/include/sourcemeta/core/jsonpointer_position.h
index 8a68999668..993df7b714 100644
--- a/src/core/jsonpointer/include/sourcemeta/core/jsonpointer_position.h
+++ b/src/core/jsonpointer/include/sourcemeta/core/jsonpointer_position.h
@@ -89,13 +89,14 @@ class SOURCEMETA_CORE_JSONPOINTER_EXPORT PointerPositionTracker {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::vector<Event> events_;
   mutable bool indexed_{false};
   mutable std::vector<TrieNode> trie_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/jsonpointer/include/sourcemeta/core/jsonpointer_walker.h b/src/core/jsonpointer/include/sourcemeta/core/jsonpointer_walker.h
index 0972b0e587..58f76d80a1 100644
--- a/src/core/jsonpointer/include/sourcemeta/core/jsonpointer_walker.h
+++ b/src/core/jsonpointer/include/sourcemeta/core/jsonpointer_walker.h
@@ -76,11 +76,12 @@ template <typename PointerT> class GenericPointerWalker {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   internal pointers_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/oauth/include/sourcemeta/core/oauth_device.h b/src/core/oauth/include/sourcemeta/core/oauth_device.h
index c178681425..6ae1341bb9 100644
--- a/src/core/oauth/include/sourcemeta/core/oauth_device.h
+++ b/src/core/oauth/include/sourcemeta/core/oauth_device.h
@@ -21,6 +21,7 @@
 namespace sourcemeta::core {
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
 
@@ -185,7 +186,7 @@ class SOURCEMETA_CORE_OAUTH_EXPORT OAuthDevicePoller {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 
 /// @ingroup oauth
diff --git a/src/core/oauth/include/sourcemeta/core/oauth_dpop.h b/src/core/oauth/include/sourcemeta/core/oauth_dpop.h
index e288850bc2..c15916a3aa 100644
--- a/src/core/oauth/include/sourcemeta/core/oauth_dpop.h
+++ b/src/core/oauth/include/sourcemeta/core/oauth_dpop.h
@@ -96,12 +96,13 @@ class SOURCEMETA_CORE_OAUTH_EXPORT OAuthDPoPProofer {
   JWKPrivate key_;
   JWSAlgorithm algorithm_;
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   mutable std::mutex mutex_;
   std::map<std::string, std::string, std::less<>> nonces_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
@@ -307,12 +308,13 @@ class SOURCEMETA_CORE_OAUTH_EXPORT OAuthDPoPReplayStore {
 
   std::size_t capacity_;
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   mutable std::mutex mutex_;
   std::vector<Entry> entries_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/oauth/include/sourcemeta/core/oauth_error.h b/src/core/oauth/include/sourcemeta/core/oauth_error.h
index b0e3c8a2e1..187383ad9f 100644
--- a/src/core/oauth/include/sourcemeta/core/oauth_error.h
+++ b/src/core/oauth/include/sourcemeta/core/oauth_error.h
@@ -281,6 +281,7 @@ auto oauth_bearer_error_status(const OAuthBearerError error) noexcept
     -> HTTPStatus;
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -307,7 +308,7 @@ class SOURCEMETA_CORE_OAUTH_EXPORT OAuthRegistrationParseError
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/oauth/include/sourcemeta/core/oauth_introspection.h b/src/core/oauth/include/sourcemeta/core/oauth_introspection.h
index cabb75059f..e7a59c531e 100644
--- a/src/core/oauth/include/sourcemeta/core/oauth_introspection.h
+++ b/src/core/oauth/include/sourcemeta/core/oauth_introspection.h
@@ -15,6 +15,7 @@
 namespace sourcemeta::core {
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
 
@@ -100,7 +101,7 @@ class SOURCEMETA_CORE_OAUTH_EXPORT OAuthIntrospectionResponse {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 
 /// @ingroup oauth
diff --git a/src/core/oauth/include/sourcemeta/core/oauth_metadata.h b/src/core/oauth/include/sourcemeta/core/oauth_metadata.h
index 8a00062dac..c97a3030e2 100644
--- a/src/core/oauth/include/sourcemeta/core/oauth_metadata.h
+++ b/src/core/oauth/include/sourcemeta/core/oauth_metadata.h
@@ -118,6 +118,7 @@ SOURCEMETA_CORE_OAUTH_EXPORT
 auto oauth_is_issuer_identifier(const std::string_view value) -> bool;
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
 
@@ -352,7 +353,7 @@ class SOURCEMETA_CORE_OAUTH_EXPORT OAuthResourceMetadata {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 
 /// @ingroup oauth
diff --git a/src/core/oauth/include/sourcemeta/core/oauth_metadata_provider.h b/src/core/oauth/include/sourcemeta/core/oauth_metadata_provider.h
index e8effd76d1..459abcaa36 100644
--- a/src/core/oauth/include/sourcemeta/core/oauth_metadata_provider.h
+++ b/src/core/oauth/include/sourcemeta/core/oauth_metadata_provider.h
@@ -18,6 +18,7 @@
 namespace sourcemeta::core {
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
 
@@ -227,7 +228,7 @@ class SOURCEMETA_CORE_OAUTH_EXPORT OAuthResourceMetadataProvider {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/oauth/include/sourcemeta/core/oauth_registration.h b/src/core/oauth/include/sourcemeta/core/oauth_registration.h
index 7ba075eedf..72a619db35 100644
--- a/src/core/oauth/include/sourcemeta/core/oauth_registration.h
+++ b/src/core/oauth/include/sourcemeta/core/oauth_registration.h
@@ -15,6 +15,7 @@
 namespace sourcemeta::core {
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
 
@@ -152,7 +153,7 @@ class SOURCEMETA_CORE_OAUTH_EXPORT OAuthClientMetadata {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 
 /// @ingroup oauth
diff --git a/src/core/oidc/include/sourcemeta/core/oidc_error.h b/src/core/oidc/include/sourcemeta/core/oidc_error.h
index 1af3c2bc1c..67335633ec 100644
--- a/src/core/oidc/include/sourcemeta/core/oidc_error.h
+++ b/src/core/oidc/include/sourcemeta/core/oidc_error.h
@@ -13,6 +13,7 @@
 namespace sourcemeta::core {
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -40,7 +41,7 @@ class SOURCEMETA_CORE_OIDC_EXPORT OIDCRegistrationParseError
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 /// @ingroup oidc
diff --git a/src/core/oidc/include/sourcemeta/core/oidc_metadata.h b/src/core/oidc/include/sourcemeta/core/oidc_metadata.h
index a317009a7a..6d56927269 100644
--- a/src/core/oidc/include/sourcemeta/core/oidc_metadata.h
+++ b/src/core/oidc/include/sourcemeta/core/oidc_metadata.h
@@ -15,6 +15,7 @@
 namespace sourcemeta::core {
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
 
@@ -167,7 +168,7 @@ class SOURCEMETA_CORE_OIDC_EXPORT OIDCProviderMetadata {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 
 /// @ingroup oidc
diff --git a/src/core/oidc/include/sourcemeta/core/oidc_registration.h b/src/core/oidc/include/sourcemeta/core/oidc_registration.h
index 7e4d4528d7..05ed706b3e 100644
--- a/src/core/oidc/include/sourcemeta/core/oidc_registration.h
+++ b/src/core/oidc/include/sourcemeta/core/oidc_registration.h
@@ -16,6 +16,7 @@
 namespace sourcemeta::core {
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
 
@@ -114,7 +115,7 @@ class SOURCEMETA_CORE_OIDC_EXPORT OIDCClientMetadata {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 
 /// @ingroup oidc
diff --git a/src/core/punycode/include/sourcemeta/core/punycode_error.h b/src/core/punycode/include/sourcemeta/core/punycode_error.h
index 0f885557a1..e385ba5f6b 100644
--- a/src/core/punycode/include/sourcemeta/core/punycode_error.h
+++ b/src/core/punycode/include/sourcemeta/core/punycode_error.h
@@ -15,6 +15,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -37,7 +38,7 @@ class SOURCEMETA_CORE_PUNYCODE_EXPORT PunycodeError : public std::exception {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/semver/include/sourcemeta/core/semver.h b/src/core/semver/include/sourcemeta/core/semver.h
index 5722d63d50..8423718547 100644
--- a/src/core/semver/include/sourcemeta/core/semver.h
+++ b/src/core/semver/include/sourcemeta/core/semver.h
@@ -128,12 +128,13 @@ class SOURCEMETA_CORE_SEMVER_EXPORT SemVer {
   std::uint64_t minor_{0};
   std::uint64_t patch_{0};
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::string_view pre_release_;
   std::string_view build_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/semver/include/sourcemeta/core/semver_error.h b/src/core/semver/include/sourcemeta/core/semver_error.h
index 51befa9df6..67117a9fe6 100644
--- a/src/core/semver/include/sourcemeta/core/semver_error.h
+++ b/src/core/semver/include/sourcemeta/core/semver_error.h
@@ -11,6 +11,7 @@
 namespace sourcemeta::core {
 
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -54,7 +55,7 @@ class SOURCEMETA_CORE_SEMVER_EXPORT SemVerOverflowError
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/uri/include/sourcemeta/core/uri.h b/src/core/uri/include/sourcemeta/core/uri.h
index 91b5570253..df5498358b 100644
--- a/src/core/uri/include/sourcemeta/core/uri.h
+++ b/src/core/uri/include/sourcemeta/core/uri.h
@@ -520,13 +520,14 @@ class SOURCEMETA_CORE_URI_EXPORT URI {
 
     private:
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
       std::string_view raw_{};
       std::size_t pair_start_{std::string_view::npos};
       value_type current_{};
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
     };
 
@@ -538,11 +539,12 @@ class SOURCEMETA_CORE_URI_EXPORT URI {
 
   private:
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
     std::string_view raw_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
   };
 
@@ -1163,6 +1165,7 @@ class SOURCEMETA_CORE_URI_EXPORT URI {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::optional<std::string> path_{};
@@ -1177,7 +1180,7 @@ class SOURCEMETA_CORE_URI_EXPORT URI {
   // (RFC 3986)
   bool iri_{false};
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/uri/include/sourcemeta/core/uri_error.h b/src/core/uri/include/sourcemeta/core/uri_error.h
index dacbae9cec..4d79c5a34c 100644
--- a/src/core/uri/include/sourcemeta/core/uri_error.h
+++ b/src/core/uri/include/sourcemeta/core/uri_error.h
@@ -16,6 +16,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -58,7 +59,7 @@ class SOURCEMETA_CORE_URI_EXPORT URIError : public std::exception {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/uritemplate/include/sourcemeta/core/uritemplate.h b/src/core/uritemplate/include/sourcemeta/core/uritemplate.h
index 9f60952ad1..7bf185c46d 100644
--- a/src/core/uritemplate/include/sourcemeta/core/uritemplate.h
+++ b/src/core/uritemplate/include/sourcemeta/core/uritemplate.h
@@ -152,11 +152,12 @@ class SOURCEMETA_CORE_URITEMPLATE_EXPORT URITemplate {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::vector<URITemplateToken> tokens_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/core/uritemplate/include/sourcemeta/core/uritemplate_error.h b/src/core/uritemplate/include/sourcemeta/core/uritemplate_error.h
index e9bdd6c6c7..9ac0e75c3a 100644
--- a/src/core/uritemplate/include/sourcemeta/core/uritemplate_error.h
+++ b/src/core/uritemplate/include/sourcemeta/core/uritemplate_error.h
@@ -19,6 +19,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -199,7 +200,7 @@ class SOURCEMETA_CORE_URITEMPLATE_EXPORT URITemplateRouterReadError
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/yaml/include/sourcemeta/core/yaml_error.h b/src/core/yaml/include/sourcemeta/core/yaml_error.h
index 07f01fac93..fff9a8011c 100644
--- a/src/core/yaml/include/sourcemeta/core/yaml_error.h
+++ b/src/core/yaml/include/sourcemeta/core/yaml_error.h
@@ -18,6 +18,7 @@ namespace sourcemeta::core {
 // safe
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -153,7 +154,7 @@ class SOURCEMETA_CORE_YAML_EXPORT YAMLDuplicateKeyError
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/core/yaml/include/sourcemeta/core/yaml_roundtrip.h b/src/core/yaml/include/sourcemeta/core/yaml_roundtrip.h
index d3ea4d0517..9a655dfa10 100644
--- a/src/core/yaml/include/sourcemeta/core/yaml_roundtrip.h
+++ b/src/core/yaml/include/sourcemeta/core/yaml_roundtrip.h
@@ -20,6 +20,7 @@ namespace sourcemeta::core {
 // safe
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -122,7 +123,7 @@ class SOURCEMETA_CORE_YAML_EXPORT YAMLRoundTrip {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/lang/io/include/sourcemeta/core/io_bytestream.h b/src/lang/io/include/sourcemeta/core/io_bytestream.h
index 065a8f133a..f00235a0ce 100644
--- a/src/lang/io/include/sourcemeta/core/io_bytestream.h
+++ b/src/lang/io/include/sourcemeta/core/io_bytestream.h
@@ -20,6 +20,7 @@ namespace sourcemeta::core {
 // (LNK2005).
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -59,7 +60,7 @@ class OutputByteStream : public std::ostringstream {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/lang/io/include/sourcemeta/core/io_error.h b/src/lang/io/include/sourcemeta/core/io_error.h
index f826241e36..6fc243e022 100644
--- a/src/lang/io/include/sourcemeta/core/io_error.h
+++ b/src/lang/io/include/sourcemeta/core/io_error.h
@@ -17,6 +17,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -167,7 +168,7 @@ class SOURCEMETA_CORE_IO_EXPORT IOStreamWriteError : public std::exception {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/lang/io/include/sourcemeta/core/io_temporary.h b/src/lang/io/include/sourcemeta/core/io_temporary.h
index 311151b826..cf77883491 100644
--- a/src/lang/io/include/sourcemeta/core/io_temporary.h
+++ b/src/lang/io/include/sourcemeta/core/io_temporary.h
@@ -42,11 +42,12 @@ class SOURCEMETA_CORE_IO_EXPORT TemporaryDirectory {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251)
 #endif
   std::filesystem::path path_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/lang/numeric/include/sourcemeta/core/numeric_error.h b/src/lang/numeric/include/sourcemeta/core/numeric_error.h
index 9e1691ef51..63cd02ad22 100644
--- a/src/lang/numeric/include/sourcemeta/core/numeric_error.h
+++ b/src/lang/numeric/include/sourcemeta/core/numeric_error.h
@@ -14,6 +14,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -77,7 +78,7 @@ class SOURCEMETA_CORE_NUMERIC_EXPORT NumericOutOfMemoryError
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/lang/options/include/sourcemeta/core/options.h b/src/lang/options/include/sourcemeta/core/options.h
index 929d9b6d18..75ddf8b678 100644
--- a/src/lang/options/include/sourcemeta/core/options.h
+++ b/src/lang/options/include/sourcemeta/core/options.h
@@ -108,6 +108,7 @@ class SOURCEMETA_CORE_OPTIONS_EXPORT Options {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
   static constexpr std::string_view POSITIONAL_ARGUMENT_NAME{""};
@@ -118,7 +119,7 @@ class SOURCEMETA_CORE_OPTIONS_EXPORT Options {
   std::unordered_map<std::string_view, std::vector<std::string_view>> options_;
   std::unordered_set<std::string_view> flags_;
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 };
 
diff --git a/src/lang/options/include/sourcemeta/core/options_error.h b/src/lang/options/include/sourcemeta/core/options_error.h
index 94c2b449e4..d6e832a0d2 100644
--- a/src/lang/options/include/sourcemeta/core/options_error.h
+++ b/src/lang/options/include/sourcemeta/core/options_error.h
@@ -15,6 +15,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -85,7 +86,7 @@ struct SOURCEMETA_CORE_OPTIONS_EXPORT OptionsMissingOptionValueError
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/lang/process/include/sourcemeta/core/process_error.h b/src/lang/process/include/sourcemeta/core/process_error.h
index 3f6e50b425..f3ff64de82 100644
--- a/src/lang/process/include/sourcemeta/core/process_error.h
+++ b/src/lang/process/include/sourcemeta/core/process_error.h
@@ -19,6 +19,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -79,7 +80,7 @@ class SOURCEMETA_CORE_PROCESS_EXPORT ProcessSpawnError : public std::exception {
 };
 
 #if defined(_MSC_VER)
-#pragma warning(default : 4251 4275)
+#pragma warning(pop)
 #endif
 
 } // namespace sourcemeta::core
diff --git a/src/lang/test/include/sourcemeta/core/test.h b/src/lang/test/include/sourcemeta/core/test.h
index d9be4b87dd..5f4d98edc5 100644
--- a/src/lang/test/include/sourcemeta/core/test.h
+++ b/src/lang/test/include/sourcemeta/core/test.h
@@ -31,6 +31,7 @@ namespace sourcemeta::core {
 // safe.
 // https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
 #if defined(_MSC_VER)
+#pragma warning(push)
 #pragma warning(disable : 4251 4275)
 #endif
 
@@ -242,6 +243,10 @@ auto test_expect_comparison(std::string_view file, int line,
   }
 }
 
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
 } // namespace sourcemeta::core
 
 #define SOURCEMETA_CORE_TEST_REGISTER(name)                                    \