macro: Add DISABLE_WARNING_STRINGOP_OVERREAD

While at it, also add -Wunknown-warning-option to basic_disabled_warnings to fix compilation with clang

meson.build

@@ -367,6 +367,7 @@ endif
 # avoid them.
 basic_disabled_warnings = [
         '-Wno-missing-field-initializers',
+        '-Wno-unknown-warning-option',
         '-Wno-unused-parameter',
         '-Wno-nonnull-compare',
 ]

src/fundamental/macro-fundamental.h

@@ -32,6 +32,10 @@
         _Pragma("GCC diagnostic push");                                 \
         _Pragma("GCC diagnostic ignored \"-Wshadow\"")
 
+#define DISABLE_WARNING_STRINGOP_OVERREAD                               \
+        _Pragma("GCC diagnostic push");                                 \
+        _Pragma("GCC diagnostic ignored \"-Wstringop-overread\"")
+
 #define DISABLE_WARNING_INCOMPATIBLE_POINTER_TYPES                      \
         _Pragma("GCC diagnostic push");                                 \
         _Pragma("GCC diagnostic ignored \"-Wincompatible-pointer-types\"")