added 'explicit' keyword to Bitmap constructor

sql/ha_isammrg.cc:
  no Bitmap::operator=(ulonglong) present

1 files changed, 2 insertions, 2 deletions

diff --git a/sql/sql_bitmap.h b/sql/sql_bitmap.h
index e5e50c180bf..0274cd700da 100644
--- a/sql/sql_bitmap.h
+++ b/sql/sql_bitmap.h
@@ -29,7 +29,7 @@ template <uint default_width> class Bitmap
 public:
   Bitmap() { init(); }
   Bitmap(Bitmap& from) { *this=from; }
-  Bitmap(uint prefix_to_set) { init(prefix_to_set); }
+  explicit Bitmap(uint prefix_to_set) { init(prefix_to_set); }
   void init() { bitmap_init(&map, buffer, default_width, 0); }
   void init(uint prefix_to_set) { init(); set_prefix(prefix_to_set); }
   uint length() const { return default_width; }
@@ -91,7 +91,7 @@ template <> class Bitmap<64>
   ulonglong map;
 public:
   Bitmap<64>() { }
-  Bitmap<64>(uint prefix_to_set) { set_prefix(prefix_to_set); }
+  explicit Bitmap<64>(uint prefix_to_set) { set_prefix(prefix_to_set); }
   void init() { }
   void init(uint prefix_to_set) { set_prefix(prefix_to_set); }
   uint length() const { return 64; }