From 2c7e74245a3ec2cc0df4651a94d9de9ad7d99919 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Sun, 11 Aug 2019 00:24:41 +0200
Subject: [PATCH] oss-fuzz/tiff_read_rgba_fuzzer.cc: avoid issue with
 libjpeg-turbo and MSAN

---
 contrib/oss-fuzz/tiff_read_rgba_fuzzer.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/contrib/oss-fuzz/tiff_read_rgba_fuzzer.cc b/contrib/oss-fuzz/tiff_read_rgba_fuzzer.cc
index b1b189f8..86137e2a 100644
--- a/contrib/oss-fuzz/tiff_read_rgba_fuzzer.cc
+++ b/contrib/oss-fuzz/tiff_read_rgba_fuzzer.cc
@@ -22,6 +22,7 @@
  */
 
 #include <cstdint>
+#include <cstdlib>
 #include <sstream>
 #include <tiffio.h>
 #include <tiffio.hxx>
@@ -40,6 +41,14 @@ extern "C" void handle_error(const char *unused, const char *unused2, va_list un
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
   TIFFSetErrorHandler(handle_error);
   TIFFSetWarningHandler(handle_error);
+#if defined(__has_feature)
+#  if __has_feature(memory_sanitizer)
+  // libjpeg-turbo has issues with MSAN and SIMD code
+  // See https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7547
+  // and https://github.com/libjpeg-turbo/libjpeg-turbo/pull/365
+  setenv("JSIMD_FORCENONE" ,"YES", 1);
+#  endif
+#endif
   std::istringstream s(std::string(Data,Data+Size));
   TIFF* tif = TIFFStreamOpen("MemTIFF", &s);
   if (!tif) {