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Fixed bug #47485 - mysql_store_result returns a not NULL result set

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for a prepared statement.
This commit is contained in:
Dmitry Shulga 2010-09-07 14:18:01 +07:00
parent 24fc7ca4c8
commit 14dbc7e4e6
4 changed files with 110 additions and 4 deletions
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3
include/mysql.h
View File

@ -224,7 +224,8 @@ struct st_mysql_options {
enum mysql_status
{
MYSQL_STATUS_READY,MYSQL_STATUS_GET_RESULT,MYSQL_STATUS_USE_RESULT
MYSQL_STATUS_READY, MYSQL_STATUS_GET_RESULT, MYSQL_STATUS_USE_RESULT,
MYSQL_STATUS_STATEMENT_GET_RESULT
};
enum mysql_protocol_type

3
include/mysql.h.pp
View File

@ -293,7 +293,8 @@ struct st_mysql_options {
};
enum mysql_status
{
MYSQL_STATUS_READY,MYSQL_STATUS_GET_RESULT,MYSQL_STATUS_USE_RESULT
MYSQL_STATUS_READY, MYSQL_STATUS_GET_RESULT, MYSQL_STATUS_USE_RESULT,
MYSQL_STATUS_STATEMENT_GET_RESULT
};
enum mysql_protocol_type
{

6
libmysql/libmysql.c
View File

@ -2503,6 +2503,8 @@ static my_bool execute(MYSQL_STMT *stmt, char *packet, ulong length)
set_stmt_errmsg(stmt, net);
DBUG_RETURN(1);
}
else if (mysql->status == MYSQL_STATUS_GET_RESULT)
stmt->mysql->status= MYSQL_STATUS_STATEMENT_GET_RESULT;
DBUG_RETURN(0);
}
@ -2641,7 +2643,7 @@ static int stmt_read_row_unbuffered(MYSQL_STMT *stmt, unsigned char **row)
set_stmt_error(stmt, CR_SERVER_LOST, unknown_sqlstate, NULL);
return 1;
}
if (mysql->status != MYSQL_STATUS_GET_RESULT)
if (mysql->status != MYSQL_STATUS_STATEMENT_GET_RESULT)
{
set_stmt_error(stmt, stmt->unbuffered_fetch_cancelled ?
CR_FETCH_CANCELED : CR_COMMANDS_OUT_OF_SYNC,
@ -4847,7 +4849,7 @@ int STDCALL mysql_stmt_store_result(MYSQL_STMT *stmt)
DBUG_RETURN(1);
}
}
else if (mysql->status != MYSQL_STATUS_GET_RESULT)
else if (mysql->status != MYSQL_STATUS_STATEMENT_GET_RESULT)
{
set_stmt_error(stmt, CR_COMMANDS_OUT_OF_SYNC, unknown_sqlstate, NULL);
DBUG_RETURN(1);

102
tests/mysql_client_test.c
View File

@ -18297,6 +18297,107 @@ static void test_bug54041()
}
/**
Bug#47485: mysql_store_result returns a result set for a prepared statement
*/
static void test_bug47485()
{
MYSQL_STMT *stmt;
MYSQL_RES *res;
MYSQL_BIND bind[2];
int rc;
const char* sql_select = "SELECT 1, 'a'";
int int_data;
char str_data[16];
my_bool is_null[2];
my_bool error[2];
unsigned long length[2];
DBUG_ENTER("test_bug47485");
myheader("test_bug47485");
stmt= mysql_stmt_init(mysql);
check_stmt(stmt);
rc= mysql_stmt_prepare(stmt, sql_select, strlen(sql_select));
check_execute(stmt, rc);
rc= mysql_stmt_execute(stmt);
check_execute(stmt, rc);
res = mysql_store_result(mysql);
DIE_UNLESS(res == NULL);
mysql_stmt_reset(stmt);
rc= mysql_stmt_execute(stmt);
check_execute(stmt, rc);
res = mysql_use_result(mysql);
DIE_UNLESS(res == NULL);
mysql_stmt_reset(stmt);
memset(bind, 0, sizeof(bind));
bind[0].buffer_type= MYSQL_TYPE_LONG;
bind[0].buffer= (char *)&int_data;
bind[0].is_null= &is_null[0];
bind[0].length= &length[0];
bind[0].error= &error[0];
bind[1].buffer_type= MYSQL_TYPE_STRING;
bind[1].buffer= (char *)str_data;
bind[1].buffer_length= sizeof(str_data);
bind[1].is_null= &is_null[1];
bind[1].length= &length[1];
bind[1].error= &error[1];
rc= mysql_stmt_bind_result(stmt, bind);
check_execute(stmt, rc);
rc= mysql_stmt_execute(stmt);
check_execute(stmt, rc);
rc= mysql_stmt_store_result(stmt);
check_execute(stmt, rc);
while (!(rc= mysql_stmt_fetch(stmt)))
;
DIE_UNLESS(rc == MYSQL_NO_DATA);
mysql_stmt_reset(stmt);
memset(bind, 0, sizeof(bind));
bind[0].buffer_type= MYSQL_TYPE_LONG;
bind[0].buffer= (char *)&int_data;
bind[0].is_null= &is_null[0];
bind[0].length= &length[0];
bind[0].error= &error[0];
bind[1].buffer_type= MYSQL_TYPE_STRING;
bind[1].buffer= (char *)str_data;
bind[1].buffer_length= sizeof(str_data);
bind[1].is_null= &is_null[1];
bind[1].length= &length[1];
bind[1].error= &error[1];
rc= mysql_stmt_bind_result(stmt, bind);
check_execute(stmt, rc);
rc= mysql_stmt_execute(stmt);
check_execute(stmt, rc);
while (!(rc= mysql_stmt_fetch(stmt)))
;
DIE_UNLESS(rc == MYSQL_NO_DATA);
mysql_stmt_close(stmt);
DBUG_VOID_RETURN;
}
/*
Read and parse arguments and MySQL options from my.cnf
*/
@ -18622,6 +18723,7 @@ static struct my_tests_st my_tests[]= {
{ "test_bug44495", test_bug44495 },
{ "test_bug42373", test_bug42373 },
{ "test_bug54041", test_bug54041 },
{ "test_bug47485", test_bug47485 },
{ 0, 0 }
};