From b716083c7a5a689072cb8f61fc70e31546e8e45e Mon Sep 17 00:00:00 2001
From: Janne Grunau <janne-vlc@jannau.net>
Date: Mon, 19 Nov 2018 20:13:02 +0100
Subject: fuzzer: mask all CPU flags under memory sanitizer

---
 tests/libfuzzer/dav1d_fuzzer.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/libfuzzer/dav1d_fuzzer.c b/tests/libfuzzer/dav1d_fuzzer.c
index 18d012b..d4d3323 100644
--- a/tests/libfuzzer/dav1d_fuzzer.c
+++ b/tests/libfuzzer/dav1d_fuzzer.c
@@ -31,6 +31,7 @@
 #include <string.h>
 
 #include <dav1d/dav1d.h>
+#include "src/cpu.h"
 #include "dav1d_fuzzer.h"
 
 static unsigned r32le(const uint8_t *const p) {
@@ -62,6 +63,13 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 
     dav1d_version();
 
+    // memory sanitizer is inherently incompatible with asm
+#if defined(__has_feature)
+  #if __has_feature(memory_sanitizer)
+    dav1d_set_cpu_flags_mask(0);
+  #endif
+#endif
+
     if (size < 32) goto end;
     ptr += 32; // skip ivf header
 
-- 
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