[llvm] r236548 - [lib/Fuzzer] on crash print the contents of the crashy input as base64

Kostya Serebryany kcc at google.com
Tue May 5 14:59:51 PDT 2015


Author: kcc
Date: Tue May  5 16:59:51 2015
New Revision: 236548

URL: http://llvm.org/viewvc/llvm-project?rev=236548&view=rev
Log:
[lib/Fuzzer] on crash print the contents of the crashy input as base64

Modified:
    llvm/trunk/lib/Fuzzer/FuzzerIO.cpp
    llvm/trunk/lib/Fuzzer/FuzzerInternal.h
    llvm/trunk/lib/Fuzzer/FuzzerLoop.cpp

Modified: llvm/trunk/lib/Fuzzer/FuzzerIO.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Fuzzer/FuzzerIO.cpp?rev=236548&r1=236547&r2=236548&view=diff
==============================================================================
--- llvm/trunk/lib/Fuzzer/FuzzerIO.cpp (original)
+++ llvm/trunk/lib/Fuzzer/FuzzerIO.cpp Tue May  5 16:59:51 2015
@@ -60,4 +60,9 @@ std::string DirPlusFile(const std::strin
   return DirPath + "/" + FileName;
 }
 
+void PrintFileAsBase64(const std::string &Path) {
+  std::string Cmd = "base64 -w 0 < " + Path + "; echo";
+  system(Cmd.c_str());
+}
+
 }  // namespace fuzzer

Modified: llvm/trunk/lib/Fuzzer/FuzzerInternal.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Fuzzer/FuzzerInternal.h?rev=236548&r1=236547&r2=236548&view=diff
==============================================================================
--- llvm/trunk/lib/Fuzzer/FuzzerInternal.h (original)
+++ llvm/trunk/lib/Fuzzer/FuzzerInternal.h Tue May  5 16:59:51 2015
@@ -40,6 +40,7 @@ void Print(const Unit &U, const char *Pr
 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:

Modified: llvm/trunk/lib/Fuzzer/FuzzerLoop.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Fuzzer/FuzzerLoop.cpp?rev=236548&r1=236547&r2=236548&view=diff
==============================================================================
--- llvm/trunk/lib/Fuzzer/FuzzerLoop.cpp (original)
+++ llvm/trunk/lib/Fuzzer/FuzzerLoop.cpp Tue May  5 16:59:51 2015
@@ -246,6 +246,8 @@ void Fuzzer::WriteToCrash(const Unit &U,
   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() {





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