[libFuzzer] Port to Windows

Summary:
Port libFuzzer to windows-msvc.
This patch allows libFuzzer targets to be built and run on Windows, using -fsanitize=fuzzer and/or fsanitize=fuzzer-no-link. It allows these forms of coverage instrumentation to work on Windows as well.
It does not fix all issues, such as those with -fsanitize-coverage=stack-depth, which is not usable on Windows as of this patch.
It also does not fix any libFuzzer integration tests. Nearly all of them fail to compile, fixing them will come in a later patch, so libFuzzer tests are disabled on Windows until them.

Patch By: metzman

Reviewers: morehouse, rnk

Reviewed By: morehouse, rnk

Subscribers: #sanitizers, delcypher, morehouse, kcc, eraman

Differential Revision: https://reviews.llvm.org/D51022

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@341082 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 8 deletions

diff --git a/lib/fuzzer/FuzzerIO.cpp b/lib/fuzzer/FuzzerIO.cpp
index f3ead0ec5..dac5ec658 100644
--- a/lib/fuzzer/FuzzerIO.cpp
+++ b/lib/fuzzer/FuzzerIO.cpp
@@ -100,14 +100,6 @@ std::string DirPlusFile(const std::string &DirPath,
   return DirPath + GetSeparator() + FileName;
 }
 
-std::string Basename(const std::string &Path, char Separator) {
-  size_t Pos = Path.rfind(Separator);
-  if (Pos == std::string::npos)
-    return Path;
-  assert(Pos < Path.size());
-  return Path.substr(Pos + 1);
-}
-
 void DupAndCloseStderr() {
   int OutputFd = DuplicateFile(2);
   if (OutputFd > 0) {