在MySQL Connector/C ++中使用setblob设置二进制数据会导致崩溃 [英] Set binary data using setblob in mysql connector/c++ causes crash

问题描述

我尝试如下使用setBlob():

I tried to use setBlob() as follows:

class DataBuf : public streambuf
{
public:
   DataBuf(char * d, size_t s) {
      setg(d, d, d + s);
   }
};


char b[20];
DataBuf buffer((char*)b, 20);
istream stream(&buffer);

PreparedStatement* s = con->PrepareStatement("insert into mytable (mybin) values (?)");
s->setBlob(1, &stream);
int rows = s->executeUpdate();

这在executeUpdate()时崩溃.我在做什么错了?

This crashes at executeUpdate(). What am I doing wrong?

推荐答案

您确定它没有崩溃:

s->setBlob(1, &stream);

检查调试器，确保s不是NULL或废话值.

Check the debugger to make sure that s isn't NULL, or a crap value.

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