Refactoring from std::ostream to llvm::raw_ostream

According to LLVM: lightweight and simpler implementation of streams.

1 files changed, 6 insertions, 5 deletions

diff --git a/lib/Core/StatsTracker.cpp b/lib/Core/StatsTracker.cpp
index 4709a5bc..4f4552e7 100644
--- a/lib/Core/StatsTracker.cpp
+++ b/lib/Core/StatsTracker.cpp
@@ -432,11 +432,12 @@ void StatsTracker::updateStateStatistics(uint64_t addend) {
 void StatsTracker::writeIStats() {
   Module *m = executor.kmodule->module;
   uint64_t istatsMask = 0;
-  std::ostream &of = *istatsFile;
+  llvm::raw_fd_ostream &of = *istatsFile;
   
-  of.seekp(0, std::ios::end);
-  unsigned istatsSize = of.tellp();
-  of.seekp(0);
+  // We assume that we didn't move the file pointer
+  unsigned istatsSize = of.tell();
+
+  of.seek(0);
 
   of << "version: 1\n";
   of << "creator: klee\n";
@@ -564,7 +565,7 @@ void StatsTracker::writeIStats() {
     updateStateStatistics((uint64_t)-1);
   
   // Clear then end of the file if necessary (no truncate op?).
-  unsigned pos = of.tellp();
+  unsigned pos = of.tell();
   for (unsigned i=pos; i<istatsSize; ++i)
     of << '\n';