top-level c/v qualifiers for pointer types confuse linker by Krishty

Closed

as Deferred Help for as Deferred

Type:	Bug
ID:	778487
Opened:	2/4/2013 11:02:37 AM
Access Restriction:	Public

Workaround(s)

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User(s) can reproduce this bug

const / volatile on parameters which are passed by-value shouldn't make a difference in C++, but with Visual C++, it does (and causes linker errors).

Details (expand)

Visual Studio 2012

// foo.cpp
void foo(int * const) { } // Const!

// main.cpp
void foo(int *); // Non-const!

int main() {
foo(nullptr);
return 0;
}

English

Windows 7

English

error LNK2019: unresolved external symbol "void __cdecl foo(int *)" (?foo@@YAXPAH@Z)

successful build

This can be achieved by:
1) re-declaring the function with a non-const parameter in foo.cpp; or
2) changing the parameter type from int * / int * const to int / int const

0 attachments

Posted by Microsoft on 2/4/2013 at 10:09 PM

Thanks for your feedback.

We are rerouting this issue to the appropriate group within the Visual Studio Product Team for triage and resolution. These specialized experts will follow-up with your issue.

Posted by Microsoft on 2/4/2013 at 11:51 AM

Thank you for your feedback, we are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(http://support.microsoft.com)

Microsoft