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A fix and test case for Bug#6096 "field.max_length is always zero for

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numeric columns (stmt_resultset_metadata)"


libmysql/libmysql.c:
  A fix for Bug#6096 "field.max_length is always zero for numeric columns
   (stmt_resultset_metadata)": set field->max_lenght for numeric
  columns when we set up skip_result functions. A minor drawback for this 
  approach is that field->max_length  can be not zero even if 
  STMT_ATTR_UPDATE_MAX_LENGTH is not set.
sql-common/my_time.c:
  Fix valgrind warning.
tests/client_test.c:
  A test case for Bug#6096 "field.max_length is always zero for numeric 
  columns (stmt_resultset_metadata)
This commit is contained in:
unknown
2004-10-27 23:46:22 +04:00
parent 8ace53109e
commit 447fef48fd
3 changed files with 120 additions and 5 deletions
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21
libmysql/libmysql.c
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@ -1752,6 +1752,7 @@ static void stmt_update_metadata(MYSQL_STMT *stmt, MYSQL_ROWS *data);
*/
#define MAX_DATETIME_REP_LENGTH 12
#define MAX_DOUBLE_STRING_REP_LENGTH 331
/**************** Misc utility functions ****************************/
@ -3265,7 +3266,12 @@ static void read_binary_time(MYSQL_TIME *tm, uchar **pos)
tm->second= (uint) to[7];
tm->second_part= (length > 8) ? (ulong) sint4korr(to+8) : 0;
tm->year= tm->month= 0;
if (tm->day)
{
/* Convert days to hours at once */
tm->hour+= tm->day*24;
tm->day= 0;
}
*pos+= length;
}
else
@ -3558,7 +3564,7 @@ static void fetch_float_with_conversion(MYSQL_BIND *param, MYSQL_FIELD *field,
floating point -> string conversion nicely, honor all typecodes
and param->offset possibly set in mysql_stmt_fetch_column
*/
char buff[331];
char buff[MAX_DOUBLE_STRING_REP_LENGTH];
char *end;
/* TODO: move this to a header shared between client and server. */
#define NOT_FIXED_DEC 31
@ -3992,32 +3998,43 @@ my_bool STDCALL mysql_stmt_bind_result(MYSQL_STMT *stmt, MYSQL_BIND *bind)
switch (field->type) {
case MYSQL_TYPE_NULL: /* for dummy binds */
param->pack_length= 0;
field->max_length= 0;
break;
case MYSQL_TYPE_TINY:
param->pack_length= 1;
field->max_length= 4; /* as in '-127' */
break;
case MYSQL_TYPE_YEAR:
case MYSQL_TYPE_SHORT:
param->pack_length= 2;
field->max_length= 6; /* as in '-32767' */
break;
case MYSQL_TYPE_INT24:
field->max_length= 9; /* as in '16777216' or in '-8388607' */
param->pack_length= 4;
break;
case MYSQL_TYPE_LONG:
field->max_length= 11; /* '-2147483647' */
param->pack_length= 4;
break;
case MYSQL_TYPE_LONGLONG:
field->max_length= 21; /* '18446744073709551616' */
param->pack_length= 8;
break;
case MYSQL_TYPE_FLOAT:
param->pack_length= 4;
field->max_length= MAX_DOUBLE_STRING_REP_LENGTH;
break;
case MYSQL_TYPE_DOUBLE:
param->pack_length= 8;
field->max_length= MAX_DOUBLE_STRING_REP_LENGTH;
break;
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIMESTAMP:
param->skip_result= skip_result_with_length;
field->max_length= MAX_DATE_STRING_REP_LENGTH;
break;
case MYSQL_TYPE_DECIMAL:
case MYSQL_TYPE_ENUM: