stdinc: On macOS and iOS, use memset_pattern4() for SDL_memset4(). Fixes Bugzilla #4724.
diff --git a/include/SDL_stdinc.h b/include/SDL_stdinc.h
index 6ef5e3a..a95700a 100644
--- a/include/SDL_stdinc.h
+++ b/include/SDL_stdinc.h
@@ -420,7 +420,9 @@ extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c,
/* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
{
-#if defined(__GNUC__) && defined(i386)
+#ifdef __APPLE__
+ memset_pattern4(dst, &val, dwords * 4);
+#elif defined(__GNUC__) && defined(i386)
int u0, u1, u2;
__asm__ __volatile__ (
"cld \n\t"