commit ca6a2a2f1ca1419ee3e695567022fe883a57690e
author Kostya Serebryany <kcc@google.com> Tue May 05 21:59:51 2015 +0000
committer Kostya Serebryany <kcc@google.com> Tue May 05 21:59:51 2015 +0000
tree a19b7900e542b05c5b83e31b7bb77a6e6b5a4c93
parent 6d721fa28c868eaaf06ab417131c10d13c3ed10f

[lib/Fuzzer] on crash print the contents of the crashy input as base64

llvm-svn: 236548

llvm/lib/Fuzzer/FuzzerIO.cpp

diff --git a/llvm/lib/Fuzzer/FuzzerIO.cpp b/llvm/lib/Fuzzer/FuzzerIO.cpp
index ef23d42..81f37aa 100644
--- a/llvm/lib/Fuzzer/FuzzerIO.cpp
+++ b/llvm/lib/Fuzzer/FuzzerIO.cpp
@@ -60,4 +60,9 @@
   return DirPath + "/" + FileName;
 }
 
+void PrintFileAsBase64(const std::string &Path) {
+  std::string Cmd = "base64 -w 0 < " + Path + "; echo";
+  system(Cmd.c_str());
+}
+
 }  // namespace fuzzer

llvm/lib/Fuzzer/FuzzerInternal.h

diff --git a/llvm/lib/Fuzzer/FuzzerInternal.h b/llvm/lib/Fuzzer/FuzzerInternal.h
index 7787109..8948e34 100644
--- a/llvm/lib/Fuzzer/FuzzerInternal.h
+++ b/llvm/lib/Fuzzer/FuzzerInternal.h
@@ -40,6 +40,7 @@
 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:

llvm/lib/Fuzzer/FuzzerLoop.cpp

diff --git a/llvm/lib/Fuzzer/FuzzerLoop.cpp b/llvm/lib/Fuzzer/FuzzerLoop.cpp
index 9dfe30b..3a19b22 100644
--- a/llvm/lib/Fuzzer/FuzzerLoop.cpp
+++ b/llvm/lib/Fuzzer/FuzzerLoop.cpp
@@ -246,6 +246,8 @@
   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() {