Bug #58 prepare/bind/fetch fails for smallint -> long

• Submitted: 5 Feb 2003 13:08
• Modified: 5 Feb 2003 21:30
• Reporter: Georg Richter
• Status: Closed
• Category: MySQL Server
• Severity: S3 (Non-critical)
• Assigned to: Bugs System
• CPU Architecture: Any

[5 Feb 2003 13:08] Georg Richter

Description:
mysql_prepare/bind_result/execute/fetch fails for signed smallint -> long

How to repeat:
static void test_bug_58()
{
  MYSQL_STMT *stmt;
  MYSQL_BIND bind[4];
  ushort     short_value;
  long       long_value;
  long       s_length, l_length, ll_length, t_length;
  ulonglong  longlong_value;
  int        rc;
  uchar      tiny_value;

  myheader("test_bug_58");

  rc= mysql_query(mysql,"DROP TABLE IF EXISTS test_ushort");
  myquery(rc);
  
  rc= mysql_query(mysql,"CREATE TABLE test_ushort(a smallint signed, \
                                                  b smallint signed, \
                                                  c smallint unsigned, \
                                                  d smallint unsigned)");
  myquery(rc);
  
  rc= mysql_query(mysql,"INSERT INTO test_ushort VALUES(-5999, -5999, 35999, 200)");
  myquery(rc);
  
  
  stmt = mysql_prepare(mysql,"SELECT * FROM test_ushort",50);
  mystmt_init(stmt);

  rc = mysql_execute(stmt);
  mystmt(stmt, rc);

  bind[0].buffer_type= MYSQL_TYPE_SHORT;
  bind[0].buffer= (char *)&short_value;
  bind[0].is_null= 0;
  bind[0].length= &s_length;
  
  bind[1].buffer_type= MYSQL_TYPE_LONG;
  bind[1].buffer= (char *)&long_value;
  bind[1].is_null= 0;
  bind[1].length= &l_length;

  bind[2].buffer_type= MYSQL_TYPE_LONGLONG;
  bind[2].buffer= (char *)&longlong_value;
  bind[2].is_null= 0;
  bind[2].length= &ll_length;
  
  bind[3].buffer_type= MYSQL_TYPE_TINY;
  bind[3].buffer= (char *)&tiny_value;
  bind[3].is_null= 0;
  bind[3].length= &t_length;
  
  rc = mysql_bind_result(stmt, bind);
  mystmt(stmt, rc);

  rc = mysql_fetch(stmt);
  mystmt(stmt, rc);
  
  fprintf(stdout,"\n ushort: %d (%ld)", short_value, s_length);
  fprintf(stdout,"\n ulong : %ld (%ld)", long_value, l_length);
  fprintf(stdout,"\n ulong : %lld (%ld)", longlong_value, ll_length);
  fprintf(stdout,"\n ulong : %d   (%ld)", tiny_value, t_length);
  
  myassert(short_value == -5999);
  myassert(s_length == 2);
  
  myassert(long_value == -5999);
  myassert(l_length == 4);

  myassert(longlong_value == 35999);
  myassert(ll_length == 8);

  myassert(tiny_value == 200);
  myassert(t_length == 1);
  
  rc = mysql_fetch(stmt);
  myassert(rc == MYSQL_NO_DATA);

  mysql_stmt_close(stmt);
}

[5 Feb 2003 21:24] MySQL Developer

Thank you for your bug report. This issue has already been fixed
in the latest released version of that product, which you can download at 
http://www.mysql.com/downloads/

It is now fixed and the fix is available from the current BK source.

[5 Feb 2003 21:32] Venu Anuganti

It is now fixed and the fix is available from the current BK source tree.

The tests are also added as test_sshort_bug() and test_stiny_bug() in client_test.c for verification purpose.

Thanks