Ours is a MFC application, which links to a win32 DLL. When the application invokes this DLL function, the argument "buffer" becomes a "Bad Pointer", after entering the function stack. This results in an application crash.
static MyClass* Instance(string& buffer);
I changed the argument type to "char *", but it only pushes the crash to next statement in the function. How to detect this heap corruption?
CString data = "some string";
string str = data.GetBuffer();
data.ReleaseBuffer();
MyClass *obj = MyClass::Instance(str);
There were two mistakes:
Couple of custom built C++ files were not compiled with MD switch. We had to add -MD to the custom build script to make the CRT consistant with other objects.
There were LNK2005 conflicts between LIBCMT.LIB and MSVCRT.LIB, which were otherwise ignored due to the /FORCE switch. We resolved these conflicts by removing LIBCMT.LIB in Linker->Input
Thanks all for your help.