Problem with wcscpy

NTDEV
1

Hello all,

At one point in my driver I need to copy a wchar from one variable to another so I have been using wcscpy. While in checked build mode this works although it gives me a warning saying that it is found in dontuse.h as a security concern. When I switched to trying the free build it treated this warning as an error and did not build. So I switched from using wcscpy to wcscpy_s and now I am getting:

error LNK2019: unresolved external symbol _wcscpy_s referenced in function “long __stdcall CreateConnection(struct _USER_GLOBAL_INFO *,struct _CONNECT_IN*)” (?CreateConnection@@YGJPAU_USER_GLOBAL_INFO@@PAU_CONNECT_IN@@@Z)

So now I am unsure what to do, wcscpy builds fine in checked mode but won’t build in release mode, but the correct function wcscpy_s won’t build in either mode.

Here is the code so you can see I am using wcscpy_s correctly:

//BEFORE THE CHANGE
wcscpy(pEntry->Disk0BaseAddress, PConnectInfo->Disk0Path);
//AFTER THE CHANGE
wcscpy_s(pEntry->Disk0BaseAddress, 256, PConnectInfo->Disk0Path);

Thanks for your help in advance. I will continue to work in the checked build until this problem is resolved.

Daniel

2

Try linking against libcntpr.lib. instead, you might just want to use RtlStringCchCopy or RtlStringCbCopy if you are already going to the trouble to change the call to pass the length

d

-----Original Message-----
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of dducharme@my.uri.edu
Sent: Monday, April 04, 2011 3:27 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] Problem with wcscpy

Hello all,

At one point in my driver I need to copy a wchar from one variable to another so I have been using wcscpy. While in checked build mode this works although it gives me a warning saying that it is found in dontuse.h as a security concern. When I switched to trying the free build it treated this warning as an error and did not build. So I switched from using wcscpy to wcscpy_s and now I am getting:

error LNK2019: unresolved external symbol _wcscpy_s referenced in function “long __stdcall CreateConnection(struct _USER_GLOBAL_INFO *,struct _CONNECT_IN*)” (?CreateConnection@@YGJPAU_USER_GLOBAL_INFO@@PAU_CONNECT_IN@@@Z)

So now I am unsure what to do, wcscpy builds fine in checked mode but won’t build in release mode, but the correct function wcscpy_s won’t build in either mode.

Here is the code so you can see I am using wcscpy_s correctly:

//BEFORE THE CHANGE
wcscpy(pEntry->Disk0BaseAddress, PConnectInfo->Disk0Path); //AFTER THE CHANGE wcscpy_s(pEntry->Disk0BaseAddress, 256, PConnectInfo->Disk0Path);

Thanks for your help in advance. I will continue to work in the checked build until this problem is resolved.

Daniel

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3

RtlStringCchCopy or RtlStringCbCopy are the functions.

–
Maxim S. Shatskih
Windows DDK MVP
xxxxx@storagecraft.com
http://www.storagecraft.com

wrote in message news:xxxxx@ntdev…
> Hello all,
>
> At one point in my driver I need to copy a wchar from one variable to another so I have been using wcscpy. While in checked build mode this works although it gives me a warning saying that it is found in dontuse.h as a security concern. When I switched to trying the free build it treated this warning as an error and did not build. So I switched from using wcscpy to wcscpy_s and now I am getting:
>
> error LNK2019: unresolved external symbol _wcscpy_s referenced in function “long __stdcall CreateConnection(struct _USER_GLOBAL_INFO ,struct _CONNECT_IN)” (?CreateConnection@@YGJPAU_USER_GLOBAL_INFO@@PAU_CONNECT_IN@@@Z)
>
> So now I am unsure what to do, wcscpy builds fine in checked mode but won’t build in release mode, but the correct function wcscpy_s won’t build in either mode.
>
> Here is the code so you can see I am using wcscpy_s correctly:
>
> //BEFORE THE CHANGE
> wcscpy(pEntry->Disk0BaseAddress, PConnectInfo->Disk0Path);
> //AFTER THE CHANGE
> wcscpy_s(pEntry->Disk0BaseAddress, 256, PConnectInfo->Disk0Path);
>
> Thanks for your help in advance. I will continue to work in the checked build until this problem is resolved.
>
> Daniel
>