bk commit into 4.1 tree (msvensson:1.2583) BUG#24498

[msvensson]

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ChangeSet@stripped, 2006-12-08 16:08:54+01:00, msvensson@neptunus.(none) +1 -0
  Bug#24498 Stack overflow in mysqltest
   - Thanks to Vasil Dimov for the patch!

  client/mysqltest.c@stripped, 2006-12-08 16:08:52+01:00, msvensson@neptunus.(none) +3 -1
    Use my_snprintf to protect against exceeding size of buff
    Since variable name and valu might not be null terminated it's necessary to
    provide the length of the format specifiers.   

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	msvensson
# Host:	neptunus.(none)
# Root:	/home/msvensson/mysql/mysql-4.1-maint

--- 1.228/client/mysqltest.c	2006-12-08 16:08:58 +01:00
+++ 1.229/client/mysqltest.c	2006-12-08 16:08:58 +01:00
@@ -1240,7 +1240,9 @@ void var_set(const char *var_name, const
       v->int_dirty= 0;
       v->str_val_len= strlen(v->str_val);
     }
-    strxmov(buf, v->name, "=", v->str_val, NullS);
+    my_snprintf(buf, sizeof(buf), "%.*s=%.*s",
+                v->name_len, v->name,
+                v->str_val_len, v->str_val);
     if (!(v->env_s= my_strdup(buf, MYF(MY_WME))))
       die("Out of memory");
     putenv(v->env_s);