ARM: Disable hand-written AArch32 NEON on AArch64
diff --git a/pngpriv.h b/pngpriv.h
index 3581f67..b9187fd 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -174,7 +174,10 @@
# else /* !defined __ARM_NEON__ */
/* The 'intrinsics' code simply won't compile without this -mfpu=neon:
*/
-# define PNG_ARM_NEON_IMPLEMENTATION 2
+# if !defined(__aarch64__)
+ /* The assembler code currently does not work on ARM64 */
+# define PNG_ARM_NEON_IMPLEMENTATION 2
+# endif /* __aarch64__ */
# endif /* __ARM_NEON__ */
# endif /* !PNG_ARM_NEON_IMPLEMENTATION */