From dc78d6a0ce5a95a112b96d3b029172bb64d83252 Mon Sep 17 00:00:00 2001
From: Rodger Combs <rodger.combs@gmail.com>
Date: Mon, 27 Jul 2015 17:53:21 -0500
Subject: Fix crash when the OS doesn't support AVX2

---
 libass/ass_utils.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'libass/ass_utils.c')

diff --git a/libass/ass_utils.c b/libass/ass_utils.c
index a6a063b..94edf80 100644
--- a/libass/ass_utils.c
+++ b/libass/ass_utils.c
@@ -48,6 +48,9 @@ int has_avx(void)
     if(!(ecx & (1 << 27))) // not OSXSAVE
         return 0;
     uint32_t misc = ecx;
+    ass_get_xgetbv(0, &eax, &edx);
+    if((eax & 0x6) != 0x6)
+        return 0;
     eax = 0;
     ass_get_cpuid(&eax, &ebx, &ecx, &edx);
     return (ecx & 0x6) == 0x6 ? (misc >> 28) & 0x1 : 0; // check high bits are relevant, then AVX support
-- 
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