From 0fe2c49a17ebe19a60e88a7d9ce26dfb52c022d3 Mon Sep 17 00:00:00 2001
From: Andrea Fioraldi <andreafioraldi@gmail.com>
Date: Wed, 13 Jan 2021 21:42:56 +0100
Subject: [PATCH] fake sigill crash in libpng harness

---
 fuzzers/libfuzzer_libpng/harness.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fuzzers/libfuzzer_libpng/harness.cc b/fuzzers/libfuzzer_libpng/harness.cc
index 979475d10f..f8d9f40124 100644
--- a/fuzzers/libfuzzer_libpng/harness.cc
+++ b/fuzzers/libfuzzer_libpng/harness.cc
@@ -157,6 +157,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   // This is going to be too slow.
   if (width && height > 100000000 / width) {
     PNG_CLEANUP
+    asm("ud2");
     return 0;
   }