diff --color -Naur swift-corelibs-libdispatch-orig/src/apply.c swift-corelibs-libdispatch/src/apply.c
--- swift-corelibs-libdispatch-orig/src/apply.c	2022-10-01 10:48:05.000000000 -0500
+++ swift-corelibs-libdispatch/src/apply.c	2024-12-17 14:56:01.110477562 -0600
@@ -20,6 +20,9 @@
 
 #include "internal.h"
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wcast-function-type-mismatch"
+
 typedef void (*dispatch_apply_function_t)(void *, size_t);
 static char const * const _dispatch_apply_key = "apply";
 
@@ -366,3 +369,6 @@
 			(dispatch_apply_function_t)_dispatch_Block_invoke(work));
 }
 #endif
+
+#pragma GCC diagnostic pop
+
diff --color -Naur swift-corelibs-libdispatch-orig/src/data.c swift-corelibs-libdispatch/src/data.c
--- swift-corelibs-libdispatch-orig/src/data.c	2022-10-01 10:48:05.000000000 -0500
+++ swift-corelibs-libdispatch/src/data.c	2024-12-17 14:57:39.514903781 -0600
@@ -20,6 +20,9 @@
 
 #include "internal.h"
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wcast-function-type-mismatch"
+
 /*
  * Dispatch data objects are dispatch objects with standard retain/release
  * memory management. A dispatch data object either points to a number of other
@@ -738,3 +741,5 @@
 	return mep;
 }
 #endif // HAVE_MACH
+
+#pragma GCC diagnostic pop