[Codename Milan] Brace-initialization fails in function argument list (C2275)

[Codename Milan] Brace-initialization fails in function argument list (C2275) by Vidar Hasfjord

Closed

Type:	Bug
ID:	778440
Opened:	2/3/2013 9:57:13 PM
Access Restriction:	Public

Workaround(s)

view

User(s) can reproduce this bug

The use of brace-initialization to construct a temporary in a function argument list fails with the error C2275; "illegal use of this type as an expression".

Workaround: Use old-style constructor call syntax.

Details (expand)

Visual Studio 2012

See test code at the CTP compiler site: http://rise4fun.com/Vcpp/OV

// This code fails on the Visual C++ Compiler Nov 2012 CTP with the error:
// C2275: 'S' : illegal use of this type as an expression

struct S {S();};
struct T {T(S);};

void foo(S);

void test()
{
T t {S{}}; // OK
foo (S{}); // Bug: 'S' : illegal use of this type as an expression.
foo (S()); // Workaround: Use old-style constructor call syntax.
}

English

Windows 7

English

--\testvc.cpp(12) : error C2275: 'S' : illegal use of this type as an expression
--\testvc.cpp(4) : see declaration of 'S'
--\testvc.cpp(12) : error C2143: syntax error : missing ')' before '{'
--\testvc.cpp(12) : error C2143: syntax error : missing ';' before '{'
--\testvc.cpp(12) : error C2059: syntax error : ')'

No errors.

0 attachments

Posted by Microsoft on 2/4/2013 at 10:46 AM

Hi Vidar:
Thanks for reporting the issue.
A fix for this issue has been checked into the compiler sources. The fix should show up in the next release of Visual C++.

Xiang Fan
Visual C++ Team

Posted by Microsoft on 2/4/2013 at 1:24 AM

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 1:24 AM

Posted by Microsoft on 2/3/2013 at 10:51 PM

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)