bzr commit into mysql-5.0 branch (gshchepa:2643) Bug#35480

[Gleb Shchepa]

#At file:///work/bzr/mysql-5.0-bugteam/

 2643 Gleb Shchepa	2008-06-24
      back-port from 5.1.
      
      Bug#35480: BOM detection code crashes mysql CLI with zero-sized input
            
      MySQL client crashed if no input was passed to it.
modified:
  client/mysql.cc

=== modified file 'client/mysql.cc'
--- a/client/mysql.cc	2008-06-24 16:03:17 +0000
+++ b/client/mysql.cc	2008-06-24 16:05:56 +0000
@@ -1779,7 +1779,7 @@ static int read_and_execute(bool interac
         the very beginning of a text file when
         you save the file using "Unicode UTF-8" format.
       */
-      if (!line_number &&
+      if (line && !line_number &&
            (uchar) line[0] == 0xEF &&
            (uchar) line[1] == 0xBB &&
            (uchar) line[2] == 0xBF)