[libFuzzer] extend -print_coverage to print the comma-separated list of covered dirs. Note: the Windows stub for DirName is left unimplemented

llvm-svn: 288276

1 files changed, 10 insertions, 1 deletions

diff --git a/llvm/lib/Fuzzer/FuzzerIOPosix.cpp b/llvm/lib/Fuzzer/FuzzerIOPosix.cpp
index 740d52d0b1d..a4290face97 100644
--- a/llvm/lib/Fuzzer/FuzzerIOPosix.cpp
+++ b/llvm/lib/Fuzzer/FuzzerIOPosix.cpp
@@ -18,8 +18,9 @@
 #include <dirent.h>
 #include <fstream>
 #include <iterator>
-#include <sys/types.h>
+#include <libgen.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 #include <unistd.h>
 
 namespace fuzzer {
@@ -74,5 +75,13 @@ void DeleteFile(const std::string &Path) {
   unlink(Path.c_str());
 }
 
+std::string DirName(const std::string &FileName) {
+  char *Tmp = new char[FileName.size() + 1];
+  memcpy(Tmp, FileName.c_str(), FileName.size() + 1);
+  std::string Res = dirname(Tmp);
+  delete [] Tmp;
+  return Res;
+}
+
 }  // namespace fuzzer
 #endif // LIBFUZZER_POSIX