upb: remove <stddef.h> and <stdlib.h> from port/def.inc

PiperOrigin-RevId: 559234283

upb/lex/atoi.h

@@ -31,6 +31,8 @@
 #ifndef UPB_LEX_ATOI_H_
 #define UPB_LEX_ATOI_H_
 
+#include <stdint.h>
+
 // Must be last.
 #include "upb/port/def.inc"
 

upb/lex/unicode.h

@@ -31,6 +31,8 @@
 #ifndef UPB_LEX_UNICODE_H_
 #define UPB_LEX_UNICODE_H_
 
+#include <stdint.h>
+
 // Must be last.
 #include "upb/port/def.inc"
 

upb/mem/arena.h

@@ -43,6 +43,8 @@
 #ifndef UPB_MEM_ARENA_H_
 #define UPB_MEM_ARENA_H_
 
+#include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #include "upb/mem/alloc.h"

upb/mini_descriptor/internal/base92.h

@@ -31,6 +31,8 @@
 #ifndef UPB_MINI_DESCRIPTOR_INTERNAL_BASE92_H_
 #define UPB_MINI_DESCRIPTOR_INTERNAL_BASE92_H_
 
+#include <stdint.h>
+
 #include "upb/base/internal/log2.h"
 
 // Must be last.

upb/mini_descriptor/internal/encode.h

@@ -31,6 +31,8 @@
 #ifndef UPB_MINI_DESCRIPTOR_INTERNAL_ENCODE_H_
 #define UPB_MINI_DESCRIPTOR_INTERNAL_ENCODE_H_
 
+#include <stdint.h>
+
 #include "upb/base/descriptor_constants.h"
 
 // Must be last.

upb/mini_table/internal/enum.h

@@ -31,6 +31,8 @@
 #ifndef UPB_MINI_TABLE_INTERNAL_ENUM_H_
 #define UPB_MINI_TABLE_INTERNAL_ENUM_H_
 
+#include <stdint.h>
+
 // Must be last.
 #include "upb/port/def.inc"
 

upb/mini_table/internal/field.h

@@ -31,6 +31,8 @@
 #ifndef UPB_MINI_TABLE_INTERNAL_FIELD_H_
 #define UPB_MINI_TABLE_INTERNAL_FIELD_H_
 
+#include <stdint.h>
+
 #include "upb/base/descriptor_constants.h"
 
 // Must be last.

upb/port/def.inc

@@ -68,8 +68,6 @@
 #include <assert.h>
 #include <setjmp.h>
 #include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
 #include <stdio.h>
 
 #if UINTPTR_MAX == 0xffffffff

upb/wire/internal/swap.h

@@ -31,6 +31,8 @@
 #ifndef UPB_WIRE_INTERNAL_SWAP_H_
 #define UPB_WIRE_INTERNAL_SWAP_H_
 
+#include <stdint.h>
+
 // Must be last.
 #include "upb/port/def.inc"