--- src/google/protobuf/generated_message_reflection.h	2026-06-12 00:26:38.000000000 +0800
+++ src/google/protobuf/generated_message_reflection.h	2026-07-11 01:12:59.000000000 +0800
@@ -282,8 +282,8 @@
 // The num_xxx might not be close to their respective pointer, but this saves
 // padding.
 struct PROTOBUF_EXPORT DescriptorTable {
-  mutable bool is_initialized;
-  bool is_eager;
+  mutable uint8_t is_initialized;
+  uint8_t is_eager;
   int size;  // of serialized descriptor
   const char* descriptor;
   const char* filename;

--- src/google/protobuf/extension_set.h	2026-06-12 00:26:38.000000000 +0800
+++ src/google/protobuf/extension_set.h	2026-07-11 01:10:41.000000000 +0800
@@ -151,9 +151,9 @@
   int number = 0;
 
   FieldType type = 0;
-  bool is_repeated = false;
-  bool is_packed : 1;
-  bool is_utf8 : 1;  // validate UTF8 if true
+  uint8_t is_repeated = false;
+  uint8_t is_packed : 1;
+  uint8_t is_utf8 : 1;  // validate UTF8 if true
   LazyAnnotation is_lazy = LazyAnnotation::kUndefined;
 
   struct EnumValidityCheck {