merge from 5.5

1 files changed, 7 insertions, 3 deletions

diff --git a/sql/sql_string.h b/sql/sql_string.h
index 0ce67108423..845b7c280b1 100644
--- a/sql/sql_string.h
+++ b/sql/sql_string.h
@@ -104,7 +104,7 @@ public:
   inline uint32 alloced_length() const { return Alloced_length;}
   inline char& operator [] (uint32 i) const { return Ptr[i]; }
   inline void length(uint32 len) { str_length=len ; }
-  inline bool is_empty() { return (str_length == 0); }
+  inline bool is_empty() const { return (str_length == 0); }
   inline void mark_as_const() { Alloced_length= 0;}
   inline const char *ptr() const { return Ptr; }
   inline char *c_ptr()
@@ -265,8 +265,12 @@ public:
 	    CHARSET_INFO *csto, uint *errors);
   bool append(const String &s);
   bool append(const char *s);
-  bool append(const char *s,uint32 arg_length);
-  bool append(const char *s,uint32 arg_length, CHARSET_INFO *cs);
+  bool append(LEX_STRING *ls)
+  {
+    return append(ls->str, ls->length);
+  }
+  bool append(const char *s, uint32 arg_length);
+  bool append(const char *s, uint32 arg_length, CHARSET_INFO *cs);
   bool append_ulonglong(ulonglong val);
   bool append(IO_CACHE* file, uint32 arg_length);
   bool append_with_prefill(const char *s, uint32 arg_length,