From 605f3162583598e166c89724da86bdce8137e2ce Mon Sep 17 00:00:00 2001
From: Kostya Serebryany <kcc@google.com>
Date: Tue, 5 May 2015 21:59:51 +0000
Subject: [PATCH] [lib/Fuzzer] on crash print the contents of the crashy input
 as base64

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236548 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Fuzzer/FuzzerIO.cpp     | 5 +++++
 lib/Fuzzer/FuzzerInternal.h | 1 +
 lib/Fuzzer/FuzzerLoop.cpp   | 2 ++
 3 files changed, 8 insertions(+)

diff --git a/lib/Fuzzer/FuzzerIO.cpp b/lib/Fuzzer/FuzzerIO.cpp
index ef23d42ea53..81f37aa3c01 100644
--- a/lib/Fuzzer/FuzzerIO.cpp
+++ b/lib/Fuzzer/FuzzerIO.cpp
@@ -60,4 +60,9 @@ std::string DirPlusFile(const std::string &DirPath,
   return DirPath + "/" + FileName;
 }
 
+void PrintFileAsBase64(const std::string &Path) {
+  std::string Cmd = "base64 -w 0 < " + Path + "; echo";
+  system(Cmd.c_str());
+}
+
 }  // namespace fuzzer
diff --git a/lib/Fuzzer/FuzzerInternal.h b/lib/Fuzzer/FuzzerInternal.h
index 77871097bd7..8948e3478c5 100644
--- a/lib/Fuzzer/FuzzerInternal.h
+++ b/lib/Fuzzer/FuzzerInternal.h
@@ -40,6 +40,7 @@ void Print(const Unit &U, const char *PrintAfter = "");
 void PrintASCII(const Unit &U, const char *PrintAfter = "");
 std::string Hash(const Unit &U);
 void SetTimer(int Seconds);
+void PrintFileAsBase64(const std::string &Path);
 
 class Fuzzer {
  public:
diff --git a/lib/Fuzzer/FuzzerLoop.cpp b/lib/Fuzzer/FuzzerLoop.cpp
index 9dfe30b6d79..3a19b22653d 100644
--- a/lib/Fuzzer/FuzzerLoop.cpp
+++ b/lib/Fuzzer/FuzzerLoop.cpp
@@ -246,6 +246,8 @@ void Fuzzer::WriteToCrash(const Unit &U, const char *Prefix) {
   std::string Path = Prefix + Hash(U);
   WriteToFile(U, Path);
   std::cerr << "CRASHED; file written to " << Path << std::endl;
+  std::cerr << "Base64: ";
+  PrintFileAsBase64(Path);
 }
 
 void Fuzzer::SaveCorpus() {
-- 
2.34.1