remove OS::StackWalk

src/platform-openbsd.cc

Index: src/platform-openbsd.cc
diff --git a/src/platform-openbsd.cc b/src/platform-openbsd.cc
index 30a484f4b30b83a6fc0c9e281955d0ead0fd405d..4f5420ee45c97e5ede7ee0cde34118f1aac7c947 100644
--- a/src/platform-openbsd.cc
+++ b/src/platform-openbsd.cc
@@ -231,34 +231,6 @@ void OS::SignalCodeMovingGC() {
 }
 
 
-int OS::StackWalk(Vector<OS::StackFrame> frames) {
-  // backtrace is a glibc extension.
-  int frames_size = frames.length();
-  ScopedVector<void*> addresses(frames_size);
-
-  int frames_count = backtrace(addresses.start(), frames_size);
-
-  char** symbols = backtrace_symbols(addresses.start(), frames_count);
-  if (symbols == NULL) {
-    return kStackWalkError;
-  }
-
-  for (int i = 0; i < frames_count; i++) {
-    frames[i].address = addresses[i];
-    // Format a text representation of the frame based on the information
-    // available.
-    SNPrintF(MutableCStrVector(frames[i].text, kStackWalkMaxTextLen),
-             "%s",
-             symbols[i]);
-    // Make sure line termination is in place.
-    frames[i].text[kStackWalkMaxTextLen - 1] = '\0';
-  }
-
-  free(symbols);
-
-  return frames_count;
-}
-
 
 // Constants used for mmap.
 static const int kMmapFd = -1;