Spiff up the header files

[oota-llvm.git] / include / Support / hash_map

diff --git a/include/Support/hash_map b/include/Support/hash_map
index aefcc289e2ed0210185ec0c746978e24b6d7d5ae..d6a0ac0faf49627aebda5cc780fd682daf73e74e 100644 (file)
--- a/include/Support/hash_map
+++ b/include/Support/hash_map
@@ -1,6 +1,20 @@
+//===-- Support/hash_map - "Portable" wrapper around hash_map ---*- C++ -*-===//
+//
+// This file provides a wrapper around the mysterious <hash_map> header file
+// that seems to move around between GCC releases into and out of namespaces at
+// will.  #including this header will cause hash_map to be available in the
+// global namespace.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_HASHMAP_H
+#define SUPPORT_HASHMAP_H
+
 #if __GNUC__ == 3
 #include <ext/hash_map>
 using __gnu_cxx::hash_map;
 #else
 #include <hash_map>
 #endif
+
+#endif