Closed. This question is
off-topic。它当前不接受答案。
想改善这个问题吗？
Update the question，所以它是
on-topic，用于堆栈溢出。
5年前关闭。
我一直在几个地方寻找此错误，我发现的唯一发现可能是一个野生指针问题，但不知道如何解决。
问题是c ++连接器可以正常工作（在努力工作之后），可以连接到mysql数据库，检索信息，但是每次使用字符串或sqlstring类型时，它都会崩溃，（因此我无法从记录集中获取信息），并出现相同的错误：
0x5e477a8b处不受控制的异常
（msvcp90d.dll）访问冲突
读取存储器位置为0x00445355。
这是我正在使用的代码：
int main() {
Driver *driver;
Connection *con;
Statement *stmt;
ResultSet *res;
string fld;
char *fldName = "divisa";
int row=1, nrows=0;
char *url, *database, *usr, *pw;
url = DBHOST;
database = DATABASE;
usr = getstr("User: ", -1, 128); // char* getstr(char prompt[], char chReplace, int maxLen);
pw = new char[128];
pw = getstr("Password: ", '\0', 128);
cout << endl;
try {
driver = get_driver_instance();
con = driver->connect(url, usr, pw);
pw = new char[128];
con->setAutoCommit(0);
con->setSchema(database);
stmt = con->createStatement();
res = stmt->executeQuery("SELECT * FROM `estglob`");
while(res->next()) {
fld.assign(res->getString(fldName));
cout << fld << endl;
}
_getch();
cout << endl << "Cleaning up the resources .." << endl;
delete res;
delete stmt;
con -> close();
delete con;
}
catch (SQLException &e) {
cout << endl << "ERROR: SQLException in " << __FILE__;
cout << " (" << __FUNCTION__<< ") on line " << __LINE__ << endl;
cout << "ERROR: " << e.what();
cout << " (MySQL error code: " << e.getErrorCode() << ")";
cout << ", SQLState: " << e.getSQLState() << ")" << endl; // <== CRASH here
_getch();
return(EXIT_FAILURE);
}
catch (std::runtime_error &e)
{
cout << "ERROR: runtime_error in " << __FILE__;
cout << " (" << __FUNCTION__ << ") on line " << __LINE__ << endl;
cout << "ERROR: " << e.what() << endl;
_getch();
return(EXIT_FAILURE);
}
return(EXIT_SUCCESS);
}
任何建议/评论都将得到很好的答复！
因此，这里的调用栈在错误点：
msvcr90d.dll！memcpy（unsigned char * dst = 0x0031fa14，unsigned char * src = 0x00445355，unsigned long count = 0x0000000f）Línea314 Asm
msvcr90d.dll！
msvcp90d.dll！std :: char_traits :: _ Copy_s（char * _First1 = 0x0031fa14，unsigned int _Size_in_bytes = 0x0000000f，const char * _First2 = 0x00445355，unsigned int _Count = 0x0000000f）利纳582 + 0x16字节C ++
msvcp90d.dll！std :: _ Traits_helper :: copy_s>（char * _First1 = 0x0031fa14，unsigned int _Size = 0x0000000f，const char * _First2 = 0x00445355，unsigned int _Count = 0x0000000f，std :: _ Secure_char_traits_tag ......形式Línea714 + 0x15字节C ++
msvcp90d.dll！std :: _ Traits_helper :: copy_s>（char * _First1 = 0x0031fa14，unsigned int _Size = 0x0000000f，const char * _First2 = 0x00445355，unsigned int _Count = 0x0000000f）Línea706 + 0x22字节C ++
msvcp90d.dll！std :: basic_string，std :: allocator> :: assign（const std :: basic_string，std :: allocator>＆_Right =erróneo，unsigned int _Roff = 0x00000000，unsigned int _Count = 0xffffffff）利纳1067 + 0x25字节C ++
msvcp90d.dll！std :: basic_string，std :: allocator> :: assign（const std :: basic_string，std :: allocator>＆_Right =erróneo）Línea1052 C ++
testMySQL.exe！wmain（int argc = 0x00000001，wchar_t * * argv = 0x00834a30）Línea61 + 0x8d字节C ++
testMySQL.exe！__ tmainCRTStartup（）Línea579 + 0x19字节C
testMySQL.exe！wmainCRTStartup（）尼斯399 C
kernel32.dll！77391194（）
[Los marcos siguientes pueden no sercorrectos o faltar，no se han cargadosímbolospara kernel32.dll]
ntdll.dll！77c7b495（）
ntdll.dll！77c7b468（）