From 556d1a3b80ddedf8d68bf1293fba755f688e83b7 Mon Sep 17 00:00:00 2001
From: Kostya Serebryany <kcc@google.com>
Date: Tue, 27 Jan 2015 22:19:55 +0000
Subject: [PATCH] [fuzzer] properly enable asan's coverage feedback

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227254 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Fuzzer/FuzzerMain.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/Fuzzer/FuzzerMain.cpp b/lib/Fuzzer/FuzzerMain.cpp
index 3a4b9c07254..9d4004e951d 100644
--- a/lib/Fuzzer/FuzzerMain.cpp
+++ b/lib/Fuzzer/FuzzerMain.cpp
@@ -18,7 +18,10 @@
 
 // ASAN options:
 //   * don't dump the coverage to disk.
-extern "C" const char* __asan_default_options() { return "coverage_pcs=0"; }
+//   * enable coverage by default.
+extern "C" const char *__asan_default_options() {
+  return "coverage_pcs=0:coverage=1";
+}
 
 // Program arguments.
 struct FlagDescription {