Access to private members in a C++ Class from outside is allowed without compile errors (VS2012) by Herwig Bachner

Closed

as Deferred Help for as Deferred

Type:	Bug
ID:	774022
Opened:	12/11/2012 6:00:30 AM
Access Restriction:	Public

Workaround(s)

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User(s) can reproduce this bug

if I use a private declared member in a class the compiler ignores this and compiles this without any warnings or errors. Only VS2012 intellisense marks this as an error. I thing this a bug.

Details (expand)

Visual Studio 2012

Sample Code:

class class1{
private:
    union{
        struct{
            unsigned a:8;
            unsigned b:8;
            unsigned c:4;
            unsigned d:4;
            unsigned e:8;
        };
        unsigned int l;
    };
public:
    class1(){l=0;}
};

void functionxy(){
    class1 x;
    x.c |= 0x03;
}

English

Windows 8

English

Compiles without errors and warnings

error: member is inaccesable

0 attachments

Posted by Microsoft on 12/11/2012 at 6:14 PM

Thank you for submitting feedback on Visual Studio and .NET Framework. Your issue has been routed to the appropriate VS development team for investigation. We will contact you if we require any additional information.

Posted by Microsoft on 12/11/2012 at 6:51 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)

Posted by UnitUniverse on 12/15/2012 at 5:01 PM

class class1{
private:
union {
struct{
unsigned a:8;
unsigned b:8;
unsigned c:4;
unsigned d:4;
unsigned e:8;
}tagi;
unsigned int l;
}tago;
public:
class1(){tago.l=0;}
};

void functionxy(){
class1 x;
x.tago.l = 0x0; // C2248
x.tago.tagi.c |= 0x03; // C2248
}

Microsoft