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使用mysql_stm_bind_result函数出现运行时错误
Posted by: fangwen liu
Date: October 27, 2011 07:12PM

这是我的代码:

#include "stdafx.h"
#include "mysql.h"
#define STRSELECT "select * from test1"
#pragma comment(lib,"libmysql.lib")

int _tmain(int argc, _TCHAR* argv[])
{
MYSQL sql;
MYSQL_STMT *stmt;
MYSQL_BIND bind[1];
int int_data;
MYSQL_BIND res[1];
MYSQL_ROW row;
mysql_init(&sql);
if(!mysql_real_connect(&sql,"localhost","root","b@dme3tEv1l","test",3306,0,0))
{
fprintf_s(stdout,"unable to connect host");
exit(1);
}
stmt=mysql_stmt_init(&sql);
mysql_stmt_prepare(stmt,STRSELECT,strlen(STRSELECT));
memset(bind, 0, sizeof(bind));
bind[0].buffer_type= MYSQL_TYPE_LONG;
bind[0].buffer= (char *)&int_data;
bind[0].is_null= 0;
bind[0].length= 0;
mysql_stmt_execute(stmt);
int i=mysql_stmt_field_count(stmt);
int j=mysql_stmt_param_count(stmt);
mysql_stmt_bind_result(stmt,bind);
while(mysql_stmt_fetch(stmt))
{
printf_s("1=%d",int_data);
}
getchar();
return 0;
}


运行到mysql_stmt_bind_result的时候总弹出断言错误 libmysql.c 4320 行 DBUG_ASSERT(param->buffer_length != 0);

但查阅过源文件这一行断言不会在bind[0].buffer_type= MYSQL_TYPE_LONG;的时候运行啊,,

目前百思不得其解~~~

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