为什么DLL不能传出动态对象？

[GuanXP]

简单的DLL函数void foo(vetor<int>& out)
如果在DLL内部放了对象进该vector，那么一定会在DLL外部的
该vector的析构函数处出错。对任何其他有DLL内部申请内存而
在DLL外部释放的情形，都会同样出错。

为什么会这样？难道DLL和载体不是在同一个堆上申请动态内存？

我使用的是VC6.0

[铖邑]

好象是容器类，使用DLL有问题。

[joachern]

gz

[njypch]

难道DLL和载体不是在同一个堆上申请动态内存？
你说的不错.

[Cline]

When applications or DLLs create private heaps, these live in the process space and are accessible process-wide. Any allocation of data made from a given heap should be freed for the same heap. (Allocation from one heap and free to another makes no sense.)

[Cline]

The _CrtIsValidHeapPointer function is used to ensure that a specific memory address is within the local heap. The “local” heap refers to the heap created and managed by a particular instance of the C run-time library. If a dynamically linked library (DLL) contains a static link to the run-time library, then it has its own instance of the run-time heap, and therefore its own heap, independent of the application’s local heap. When _DEBUG is not defined, calls to _CrtIsValidHeapPointer are removed during preprocessing.

[GuanXP]

how can i judge whether a DLL has a static link to the run_time library?