--- zzzz-none-000/linux-4.9.218/include/linux/compiler-gcc.h	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ac-750/linux-4.9.218/include/linux/compiler-gcc.h	2022-11-30 09:46:20.000000000 +0000
@@ -351,3 +351,43 @@
 #if GCC_VERSION >= 50100
 #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1
 #endif
+
+/*
+ * Turn individual warnings and errors on and off locally, depending
+ * on version.
+ */
+#define __diag_GCC(version, severity, s) \
+	__diag_GCC_##version(__diag_GCC_##severity s)
+
+/* Severity used in pragma directives */
+#define __diag_GCC_ignore ignored
+#define __diag_GCC_warn warning
+#define __diag_GCC_error error
+
+/* Compilers before gcc-4.6 do not understand "#pragma GCC diagnostic push" */
+#if GCC_VERSION >= 40600
+#define __diag_str1(s) #s
+#define __diag_str(s) __diag_str1(s)
+#define __diag(s) _Pragma(__diag_str(GCC diagnostic s))
+#endif
+
+#if GCC_VERSION >= 80000
+#define __diag_GCC_8(s) __diag(s)
+#else
+#define __diag_GCC_8(s)
+#endif
+
+#if GCC_VERSION >= 80000
+/*
+ * The nonstring variable attribute specifies that an object or member
+ * declaration with type array of char, signed char, or unsigned char,
+ * or pointer to such a type is intended to store character arrays that
+ * do not necessarily contain a terminating NUL. This is useful in detecting
+ * uses of such arrays or pointers with functions that expect NUL-terminated
+ * strings, and to avoid warnings when such an array or pointer is used as
+ * an argument to a bounded string manipulation function such as strncpy.
+ *
+ * https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html
+ */
+#define __nonstring __attribute__((nonstring))
+#endif